Minetest Could Be An Educational Tool

[maier.nathan]

Okay, here's a sample letter I wrote to educators. GPL license or similar for it I guess.

"Minetest Because...";
A letter to educators.

What is Minetest?
Minetest, Minecraft and Infiniminer are incredibly fun and exciting games that help kids have a great time learning about more practical topics in a situation that does not involve violence or sexuality. Did I say it's imaginative? The concept is similar to building blocks (like legos), where you can create houses, farms, cities, tools and many other incredibly creative things. For example, metal ore is mined, crafted into ingots, used to craft different metal tools like pickaxes or other objects and then used to build a building.

You are building your own tools and creations, houses, or any other structure you can imagine. Unlike many other creative projects, then you are able to move around in it and experience your new world. For example, you can build and use a ladder. You can craft glass blocks from sand. Use them for windows and watch the square sun rise from your porch, or whatever you want. the term being use is "sandbox game."

It is in practice like art class. Of course, you don't have the advantages of working with materials and playbuilding with clay to sculpt or oil to paint with. It is still a creative activity. It is crucial to balance things like computer work with other exercise, art projects, social time, or music etc.... "Sandbox games," put creativity in an all-inclusive, physical world setting, albeit a simulation. This simulation offers an "infinite world," where any aspect of reality can be worked with and mimicked or learned.

Collaboration is also a possiblity of the game. I would say that in an educational setting this aspect can be an incredibly postitive aspect. A school is a great supervised place to start learning how to participate in collaborative processes. That skill can then be applied into a more mature setting. Just like in legoland, you can interact and build with other players. As long as your games are connected, you have many opportunities to build with classmates with your avatars both in the game at the same time In a school, only people approved to use the server will be playing. Computer servers, at places such as a school, can host games that are ensured to be set up well for their students and monitored or automated for a safe, enriching environment.

More about the lessons:
The craft making and other, "laws," of Minetest are a play versions of laws of the world. These principles can be explored without being too cautious about what really will or won't work. You can build something 800 feet high with no sound architectual principles, but you can build an estimate of reality and be proud of it. Of course you can explore any level or context of realistic building, farming, or hunting you want.

With what you create in these types of games, you can work with narratives. You can watch a city build through independent or collaborative efforts. I've set up what could be called a modest "country," home with a rooftop garden and a funky floor plan with vines to climb on to get to the roof. In the meantime, huge buildings are popping up on the server around me. I build a road to my house and someone "griefs," me and burns everything down. Not a happier moment, but I can deal with it. That's something you have to expect in any environment like this. But I go about having fun rebuilding, making it out of stone and glass this time instead of wood.

As you go, you have to manage resources. How much stone do I have? How many trees do I have and will they keep growing if harvest them at this rate? Do I have enough food growing, or livestock living to maintain my life as I lose energy exploring and building? Do I live in peace, do I steal from another player and break their trust? How does the other person treat me after this? Maybe I shouldn't do that again. Do I take sides? How do I exchange with this other person that we will both gain? Do I have enough armor, food or shelter to protect me from the antagonistic characters in the game (these can be added or removed at will by the administrators.)

Also, we, as users of Minetest are completely free to change the rules of the game. With open source software, we have the freedom to maybe change the graphics, maybe introduce a hunger meter that means you have to eat every so often. Maybe we want to program variables in the "vegetable," code to reward companion planting or crop rotation. Do we want to add new varieties of sheep? Just add a, "mod." The software is freely changeable. This is not the case with Minecraft to the extent it is in minetest. Another benefit of this software is that there is a great Minetest community. There are message boards for help or new ideas and notices for new mods. Nolan, a user from minetest forum writes, "One good side I can name for you is that we do not have a horrible community. We have some nasty people here and there but mostly we are all helpful and [Minecrat] does not have such a great community. It's actually considered one of the top 10 multiplayer games worst communities....” An added plus is that budding software designers can contribute to the code. They can learn the code and by themselves or collaboratively build changes and contribute them to the online community if they want.

Minetest is artistic, scientific, communal, loads of fun, academic and technological. In my opinion it can be among the best uses of a computer in playful creativity.

Sincerely,
Your local conscientious Minetest advocate.

I'm rereading and finding some lack of continuity, and random comments, but I'm tired. I will edit tomorrow. Please look for the meat of the letter.

[Neuromancer]

Thank you very much for your valuable contribution Nate.

However, I'm looking at something that goes on a larger scale - I want schools to use Minetest, if at all, for teaching instead of spending money on proprietary solutions. The main purpose of this thread was to see if there was enough spark and commitment in the community to let this project move up. I think that we are pretty laid back at the moment, and everyone is busy with their lives. However, I request everyone to give it a try, see if your local school wants to adopt video gaming for educating kids, and ask them to consider minetest.

On how it can be used, here is my two cents - Apart from the elementary kids using minetest to broaden their creativity, this could also be used in middle schools to teach basic coding to 8 to 13 year old kids. Minetest's modding API is very easy to pick up, and yet is just as expansive and robust as many other APIs I've seen (I've not seen many).

I am actually waiting for Necrosomething to post here - That guy has some neat ideas for expanding minetest.

I think the best way to get schools interested in Minetest as an educational tool would be to sell it as a way to teach programming. To do that we would have to make it easy for kids to learn lua with a turtle/computer craft mod. My 6 year old has done that stuff with ComputerCraft& Minecraft. Then once you have learned that, it is much easier to move to creating mods in lua for the older kids. Here were my ideas for this mod:
https://forum.minetest.net/viewtopic.php?id=8399

The thing is, minetest would allow much more powerful lua turtle api's than minecraft because lua is built into the modding system.

[dmonty]

Four of our high schools have purchaced bulk educational licencing for Minecraft and have installed dedicated minecraft servers. I've installed Minetest into the rest of the schools for those who don't want to buy the commercial product. The Minetest is an instant hit with the kids because many of them love Minecraft but not all have parents that will buy it for them. The teachers work to integrate classroom topics into a 3d environment.

https://www.youtube.com/watch?v=G-9M4I1HRt8&t=22
https://www.google.ca/search?q=minecraft+education


* Issues:
- Minecraft requires per-user licensing which not all schools/students can afford.
- Minecraft connects to Internet servers which may have inappropriate chat.
- Minecraft requires separate dedicated server to run multiplayer.


* Solution:
- Opensource "Minetest" - free opensource minecraft alternative has been installed in all schools.
- Minetest requires no licensing - all schools can afford it.
- Minetest has built in client/server gui so teachers & students can host/share their own worlds within the school.
- Unlike Minecraft - Minetest is GUI driven - so end-users don't have to mess with the command-line java to get the clients and servers up and running.
- I've disabled Minetest Internet Games/Chat so there is Lan only chat.

Some Minetest features that I like:
- Minetest is written in C++ so it is allot less CPU and RAM intensive.
- Minetest worlds and inventory is much larger ( height, depth, inventory size ) because it's not limited by java.


------

If you are wondering how Minecraft/Minetest is Educational:

* Reading/Writing - teachers/students create signs with instructions on them.

* Math - inventory and crafting requires counting blocks. Haggling trading prices with villagers and friends.

* Geometry - working with 3D blocs x,y,z

* Geography/Environment
- Worlds are huge - use maps, compass, sun, moon, to not get lost.
- North East South West - is very useful when going on long journeys and coming home again.
- Layers of soil, rock, water, sand, minerals - observe how they interact with each other and plant life.

* Social Skills - working together to accomplish a task:
- replicate a historical building/site/battle/etc.
- create and share a puzzle, maze, or adventure - requires reading, writing, communicating.
- Friendly villagers will trade with you for a cost/bargain.
- Manage scarce resources ( food, diamonds, tools, etc ).

* Technology & Science
- built in logic, wiring, programming.
- Minecraft - Redstone.
- Minetest - Mesecons & Technic - craft and solar panel to a charging station to charge cutting lasers, chain saws etc.
- Logic chips allow you program code and learn software concepts: variables, loops, condition statements, objects etc.

[rubenwardy]

You know that mc worlds stretch to 4,000km along the xy plane, compared to mt's 31km?

[Morn76]

You know that mc worlds stretch to 4,000km along the xy plane, compared to mt's 31km?

But vertically it's limited to 256 meters, which isn't a lot. That huge tower on the Karsthafen map could not be done in MC.

[Inocudom]

You know that mc worlds stretch to 4,000km along the xy plane, compared to mt's 31km?

But vertically it's limited to 256 meters, which isn't a lot. That huge tower on the Karsthafen map could not be done in MC.

From what I understand, most people would find that 31km to be more than sufficient.

Very good work, dmonty.

[twoelk]

wasn't that something like 30+ km in every direction from 0,0,0? So that would be near 64km along the xy plane, or any other plane.

[rubenwardy]

You know that mc worlds stretch to 4,000km along the xy plane, compared to mt's 31km?

* From the origin

[twoelk]

You know that mc worlds stretch to 4,000km along the xy plane, compared to mt's 31km?

* From the origin

uhm, so mc is 8000km*8000km*256m?

[Excalibur Zero]

If we're going to try to convince that Mintest could be a good tool for teaching leesons it would probably be a good idea to come up with some example lessons and make videos of them to show schools visually that Minetest can be a good educational tool.

[dmonty]

Apologies for the mistakes in MC vs MT world size. Anyways I gathered some more classroom feedback...

Watched minetest in action in Elementary classrooms and discussed it with teachers. Some feedback from staff:

Primary/intermediate kids are learning the letters/numbers and symbols to grow their communication skills (ie: math, language, reading, writing):

* Needs a set of nice looking blocks with numbers printed on them: 0 1 2 3 4 5 6 7 8 9
* Needs some operator blocks: + - x / = > < ( decimal . )
* Needs some ABCDEFG... blocks.
* The above blocks used in some lesson plan maps. e.g.
4 + 4 = ____ (build your answer)
10 - 2 = ____ (build your answer)
2 x 3 = ____ (build your answer )
4^2 = ____ (build your answer )
4^3 = ____ (build your answer)
2 + ___ = 10 ( build your answer )
2 4 6 8 __ ( what comes next - build your answer )
20 15 10 ____ ( what comes next - build your answer )
10/2 ( draw a row of 10 blocks. Split the 10 into two groups of ___ )
* Fill in the missing letters ( inventory has I F B W... ) map has A _ CDE _ G... etc
* An easy way for teachers to pick and deliver lesson maps to the kids. ( kids can work in groups )
* An inventory that is alpha-numeric friendly. ( 10 digits, mouse wheel through the alphabet or a word crafting table - make word blocks - not just signs )

* A treasure hunt map that requires answering questions while on a quest - solve linguistic and mathematical problems along the way. If they get the answer right then the teacher give them the next clue.


* Reward for finishing the lesson maps is free build time.



* One last note - not many teachers or students enjoy programming - programming to some is like a spelling test where you get an automatic fail ( crash ) when there is a single mistake. We still have teachers teach programming by drawing a GUI in VB6.

[hoodedice]

Okay. Thank you for the epic feedback dmonty.

I've started working on the above feedback set. Note that we already do have a mod for Alphabets.

Could you pass me the teacher's contact information via PM? It would be very nice if you do so.

[Topywo]

For what I read you'll probably need more custom made mods.

I found 2 mods using letters:

Alphabet mod by cactuz_pl

https://forum.minetest.net/viewtopic.php?id=2312


neon mod (glowing letters) by webdesigner97

https://forum.minetest.net/viewtopic.php?id=3260


A mod that may be used as a base for rewards

Achievements mod by rubenwardy:

https://forum.minetest.net/viewtopic.php?id=4870


Two mods that might be very interesting for (pre)elementary

phonics mod by Neuromancer

https://forum.minetest.net/viewtopic.php?id=4237


chemistry mod by Bas080

https://forum.minetest.net/viewtopic.php?id=4758


Edit: Thanks to a post of Hiradur in its topic, I saw there are actually 2 chemistry mods.

chemistry mod by 1244

https://forum.minetest.net/viewtopic.php?id=4779

[Sokomine]

Watched minetest in action in Elementary classrooms and discussed it with teachers. Some feedback from staff:

Thanks for the report of what's needed. I'm sure that will help with development.

* Needs a set of nice looking blocks with numbers printed on them: 0 1 2 3 4 5 6 7 8 9
* Needs some operator blocks: + - x / = > < ( decimal . )
* Needs some ABCDEFG... blocks.
* The above blocks used in some lesson plan maps. e.g.
4 + 4 = ____ (build your answer)
10 - 2 = ____ (build your answer)
2 x 3 = ____ (build your answer )
4^2 = ____ (build your answer )
4^3 = ____ (build your answer)
2 + ___ = 10 ( build your answer )
2 4 6 8 __ ( what comes next - build your answer )
20 15 10 ____ ( what comes next - build your answer )

Most of that can be done pretty easily. Simple operations like <number> <operator> <number> = <block placed by player> might be done entirely by random and automaticly. Same for rows (provided there's a seperator). Having number blocks for 0-99 might be rather impractical, so we'll need a positional notion based system - based on the relative position of the block.

10/2 ( draw a row of 10 blocks. Split the 10 into two groups of ___ )
* Fill in the missing letters ( inventory has I F B W... ) map has A _ CDE _ G... etc

"Inventory has I F B W" might be rather unhandy here. It might be doable...but if the children can walk between the diffrent tasks and solve what they want in whichever order they want, then it might be more practical to give them all letters to choose from.

* An easy way for teachers to pick and deliver lesson maps to the kids. ( kids can work in groups )

Guess that depends heavily on what the teachers have in mind and what they consider to be a "lesson map". From the technical point of view, saving such lesson maps as worldedit files or simply generating them automaticly depending on a difficulty level might be possible solutions. How shall the "work in groups" work in detail?

* An inventory that is alpha-numeric friendly. ( 10 digits, mouse wheel through the alphabet or a word crafting table - make word blocks - not just signs )

Perhaps a word crafting table might be most convenient. Children seem to get along with the controls of the game pretty well.

* A treasure hunt map that requires answering questions while on a quest - solve linguistic and mathematical problems along the way. If they get the answer right then the teacher give them the next clue.

That may depend on their reading capabilities. It would also be possible to play recorded audio messages if necessary. In general, having a mob that, when right-clicked, shows a question and a field to enter the answer might be useful for adventure maps as well. Integrating that all into a convincing adventure may require some building on the part of the teacher :-)

* Reward for finishing the lesson maps is free build time.

Perhaps some more immediate rewards might also be useful. The children could get blocks (which they can build with after completing the lession), or if they placed the right answer, the block may start glowing. While wrong answers have to either be digged up again or refuse to stay at their place. Giving the right amount of feedback may be extremly important here.

Perhaps in case of correct answers, a bridge or tower could be build which will lead to the freebuild area.

* One last note - not many teachers or students enjoy programming - programming to some is like a spelling test where you get an automatic fail ( crash ) when there is a single mistake. We still have teachers teach programming by drawing a GUI in VB6.

They don't need to know much about programming for those simple tasks above. But those ideas above are also a bit unspecific in parts. Presentation is important even for mods in the forum...it's even more important for learning programs.

[sfan5]

Apologies for the mistakes in MC vs MT world size. Anyways I gathered some more classroom feedback...

Watched minetest in action in Elementary classrooms and discussed it with teachers. Some feedback from staff:

Primary/intermediate kids are learning the letters/numbers and symbols to grow their communication skills (ie: math, language, reading, writing):

* Needs a set of nice looking blocks with numbers printed on them: 0 1 2 3 4 5 6 7 8 9
* Needs some operator blocks: + - x / = > < ( decimal . )
* Needs some ABCDEFG... blocks.
* The above blocks used in some lesson plan maps. e.g.
4 + 4 = ____ (build your answer)
10 - 2 = ____ (build your answer)
2 x 3 = ____ (build your answer )
4^2 = ____ (build your answer )
4^3 = ____ (build your answer)
2 + ___ = 10 ( build your answer )
2 4 6 8 __ ( what comes next - build your answer )
20 15 10 ____ ( what comes next - build your answer )
10/2 ( draw a row of 10 blocks. Split the 10 into two groups of ___ )
* Fill in the missing letters ( inventory has I F B W... ) map has A _ CDE _ G... etc
* An easy way for teachers to pick and deliver lesson maps to the kids. ( kids can work in groups )
* An inventory that is alpha-numeric friendly. ( 10 digits, mouse wheel through the alphabet or a word crafting table - make word blocks - not just signs )

* A treasure hunt map that requires answering questions while on a quest - solve linguistic and mathematical problems along the way. If they get the answer right then the teacher give them the next clue.


* Reward for finishing the lesson maps is free build time.



* One last note - not many teachers or students enjoy programming - programming to some is like a spelling test where you get an automatic fail ( crash ) when there is a single mistake. We still have teachers teach programming by drawing a GUI in VB6.

Here is a video of the mod I'm working on right now: https://mediacru.sh/ph_GCppPdO5C

[dmonty]

Thank you for your feedback. I had a look at some of the Alphabet mods - and it seems that some are crafted using braille which would be insanely difficult for primary kids. Plus the letters look plain 2D. Need some nice looking 3D alphabet blocks. A letter block with some "bling" appearance to it.

The phonics mod looks good. Thank you for that one.
https://forum.minetest.net/viewtopic.php?id=4237
* I like how it pronounced words with the blue blocks.
* A bit hard for little kids to build the words but they could have a map with pre-built words and then they can use the mouth block to help them pronounce them.
* It would be good if the top and bottom of those blocks are blank as the top can look a bit confusing as you walk around the block e.g. ou => no (upside down from the other side)
* To help teachers a way to auto-generate a word-world? Or feed in a word-list.txt which will auto-place those words in a world?

I may be able to modify the phonetics letter blocks and get our district's graphics artist to create the skins for the blocks. 4 sides have the letter on it, top and bottom blank.

I like the idea of an alphabet/word crafting table where the kids can use the keyboard to create blocks. Craft the word then have it auto populate the immediate inventory with that word - so the kids can pace the letter/number blocks on the ground without too many clicks/drags.

I like the chemistry mods.

( thinking out loud here... )
In order to make minetest easier to use: I created a wrapper script that unziped a set of mods and a sample world into the student's .minetest folder. I think I will have to write a small app that allows teachers to build or choose a world ( math or language or chemistry ) then they can auto share (push-out) that lesson with their students. The client/server model may not work well for individual lesson plans.

For the teacher to choose "Addition" or "Subtraction" map and push it out to students will be very useful. So I could modify the wrapper script to start
1) "Pick my teacher" pick-list ( remembers last choice )
2) rsync the teachers shared worlds with the student.
3) rsync the school's shared worlds with the student.
4) rsync the schools standard "mods" folder to the student's account.
--
Teacher have a "share my world lessons" interface.
Simple multi-pick-list (or checklist) to enable/disable shared worlds. Option to force-overwrite to re-set the lesson map.

I now have lots of ideas and things to code. Thank you for your feedback.

Not sure if this forum should morph into a TODO Action list to track: done, in-development, todo.

[Inocudom]

The three mods below might be useful teaching tools:
https://forum.minetest.net/viewtopic.php?id=730-Monorail
https://forum.minetest.net/viewtopic.php?id=2538-Technic
https://forum.minetest.net/viewtopic.php?id=628-Mesecons

[dmonty]

Here is a video of the mod I'm working on right now: https://mediacru.sh/ph_GCppPdO5C

This is perfect! Awesome!

I can't wait to demo this to some of our math co-coordinators.

[fishyWET]

The three mods below might be useful teaching tools:
https://forum.minetest.net/viewtopic.php?id=730-Monorail
https://forum.minetest.net/viewtopic.php?id=2538-Technic
https://forum.minetest.net/viewtopic.php?id=628-Mesecons

There are some more too like the chemistry mods:
https://forum.minetest.net/viewtopic.php?id=4779
https://forum.minetest.net/viewtopic.php?id=4758

[sfan5]

Here is a video of the mod I'm working on right now: https://mediacru.sh/ph_GCppPdO5C

This is perfect! Awesome!

I can't wait to demo this to some of our math co-coordinators.

Heres the source code: https://github.com/sfan5/minetest-teaching

[dmonty]

Heres the source code: https://github.com/sfan5/minetest-teaching

I've been testing this out for a while now. Haven't found any bugs yet.

Once the kids are back from spring break I may try to see if I can crowd source the intermediate grades to create some math maps for the primary grades. Create a server world and grant the older students teacher privs in order to create a math adventure map for the primary kids. If the kids can create some good math adventures then I'll try to make a way for the teachers to download and share the math-maps as per my thoughts above.

Thanks again sfan5!

[dmonty]

Heres the source code: https://github.com/sfan5/minetest-teaching

init.lua line 192 is missing "D"

local s = 'ABCEFGHIJKLMNOPQRSTUVWXYZ0123456789'
local s = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'

I love this teaching mod!

[dmonty]

textures/teaching_lab_util_divide.png is a colon insetad of division Obelus symbol.
http://en.wikipedia.org/wiki/Obelus

I've edited the image here.

[sfan5]

Heres the source code: https://github.com/sfan5/minetest-teaching

init.lua line 192 is missing "D"

local s = 'ABCEFGHIJKLMNOPQRSTUVWXYZ0123456789'
local s = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'

I love this teaching mod!

Thanks fixed that, I'm glad you like the mod!

[twoelk]

...
Not sure if this forum should morph into a TODO Action list to track: done, in-development, todo.
...

Well for one thing I could imagine this subject could deserve an own top level thread parallel to "Feature discussions" and "Servers", or at least be made "sticky" ;-)

I'm not sure of the intended scope of the Wiki but I would think it a good idea to have some pages about the subject on the Minetest-Wiki. The Wiki-Rules state:

• Articles must be related to Minetest.
• Content from mods other than those in minetest_game is allowed, ...

So I could imagine a "Minetest as Educational Tool" portal with links to pages about setting up Minetest for classes in a public school environment. Some pages with examples how to organize the files on servers and how to connect clients on a LAN system. Keeping in mind of course this has to be written for people who are not really interested in computers as such and just want to get the "Minetest-Tool" working.

The bulk of pages the portal links to should of course be examples of subjects suitable fo lessons and other school related activity. These examples should also include links to the needed mods and maybe background material for the teachers.

[dgm5555]

I just found this thread, and had been thinking of minetest as an educational tool for teaching maths (or many other things). My thoughts on it are on viewtopic.php?f=9&t=9171. (if anyone wants to move it to this thread, feel free)
Basically I envisaged a quest where you had to answer questions in order to get through doorways/open chests/sections of the map/ etc to complete. I know my daughter plays lots of maths games at school with this basic concept, and particularly loves the aspect of being in the same virtual environment as other classmates, so it's well proven in the classroom.
As I'm a poor programmer, on my own project so far my only progress is a piece of mesecon invisiwall which unblocks when a player gets close. Next task is to enable an unlock trigger (eg answering a question) and allow it to remember which players are allowed through (rather than just one).

Here is a video of the mod I'm working on right now: https://mediacru.sh/ph_GCppPdO5C

I like the idea of sfan5's teaching game, but I dont think the system of placing named bricks to interact is very user-friendly. Note how you had to go back into the inventory just to get a number, and how much worse would it be with letters. If you wanted to use that system then more sensible would be a brick which could turn into another brick or sequence of bricks when you typed the correct letter/number (eg place brick, click to open dialog, enter "hello world" and all 5+_+5 bricks are placed in line for you.
Also not sure how you manage the interaction when multiple kids are in the same world, potentially trying to do the same questions, and thus putting blocks in each others way.

One thing the kids seem very keen on is skinning their characters so they can tell each other apart, so that could perhaps be a little slicker (I use the player_textures mod, but I can't see teachers renaming texture files (or even more unlikely downloading skins from websites or teaching the kids how to make their own on blender, which is basic once you know how, but steep if you don't).

Mesecons: viewtopic.php?id=628
Also don't forget mesecons as a learning tool - this provides the fundamentals of electrics and programming logic, and how many kids wouldn't have a fun learning session building various electronic projects in minetest.

I would also vote for creating an 'educational' board on the forum (or at the very least a sticky), this would dramatically increase the visibility as an educational tool, and therefore speed development along this route.

BTW for whoever mentioned using blender to create blocks. I created a post and its now on the wiki on how to use blender. I haven't done the section about animation yet though (cause I'm rubbish at it). However I would have thought that just creating faces for voxels in gimp (rather than meshes in blender) would be good enough for most tasks, and would take very little time per face.
David

[Inocudom]

I would also vote for creating an 'educational' board on the forum (or at the very least a sticky), this would dramatically increase the visibility as an educational tool, and therefore speed development along this route.

I also vote for this.

I don't know if the mod linked to below could have any educational value, but kids might like it:
https://forum.minetest.net/viewtopic.php?f=9&t=8777
It it still in development, but it seeks to have clothing behave like armor does.

[dgm5555]

I don't know if the mod linked to below could have any educational value, but kids might like it:
https://forum.minetest.net/viewtopic.php?f=9&t=8777
It it still in development, but it seeks to have clothing behave like armor does.

Clothing could also be part of the reward system as you progress on your quest - how many kids wouldn't be motivated by being able to find cloths/armour/etc and it would provide an obvious marker of progress to encourage some friendly competetion (eg I got a helmet/princess dress/etc for doing my entire 4 times table...)!

[mauvebic]

Dunno, they tried teaching us about history by having us play age of empires, all we did was fuck around with cheat codes. Granted this was in the 90s, but I doubt kids are more mature today. I think schools already rely too much on gimmicks and technology at the expense of class size. Though if you're hellbent on doing this, you might want to start by redesigning crafting and resource tree so it reflects how things are really made so kids don't end up thinking you can tape a piece of coal to a stick to make a torch.

[sfan5]

textures/teaching_lab_util_divide.png is a colon insetad of division Obelus symbol.
http://en.wikipedia.org/wiki/Obelus

In germany we usually use a : instead of an ÷ to indicate division.

Here is a video of the mod I'm working on right now: https://mediacru.sh/ph_GCppPdO5C

I like the idea of sfan5's teaching game, but I dont think the system of placing named bricks to interact is very user-friendly. Note how you had to go back into the inventory just to get a number, and how much worse would it be with letters.

This system is only supposed to be used for small things where you only need at most 5 different bricks.
I planned to modify the creative menu to make getting letters easier, it is also viable to give the player 9 different bricks (of which only e.g. 3 are needed) to solve the task. The second concept would avoid needing to go into the inventory again.