Friday, 9 September 2016

Tic tac toe

This week, I carried on the idea of last week, getting students to develop an idea of how computers are designed to win games. Going through all options that the computer has to play, learning from losses.

I must say I am impressed at the activities, they have enabled students to be engaged and push there preconceptions. 

As someone commented on the photos that I made available online, They love the fact that I am using tic tac toe, for me it is about using their prior learning and developing new knowledge from it.

Getting students to develop their own pieces and gameboard through cardboard allowed them to personalise their games. I did think about developing it through the laser cutter, but this turned out to be very creative, one of our Hobsonville Habits.

Thursday, 1 September 2016

cs4fn sweet machine

One of the ideas that I am working on at the moment is to develop what I do as a teacher. I am a learner as well and I want my students to see that. I chose to develop a TURING SPIN as part of this term theme around Citizenship with a look at the Technology Curriculum of Characteristics of Technology.

We have been developing chatbots to do specific ideas, one to continue to carry on a conversation with a human, to order pizzas. This has been interesting as we use for students to develop in.

However, I felt something was missing, and I came across this last night. The Sweet Computer.
How can a computer learn from experience?
The class challenge a machine made of sweets to the game of Hexapawn (a little like a game of chess with only pawns and on a 3x3 board). At the start the machine only knows the basic rules of the game. The more it plays the better it gets: when it loses the class punish it by eating its sweets allowing it to learn from its mistakes.

Using the game Hexapawn, students use machine learning to develop a machine that will always win. 1.5Kg of Jelly beans later the students have developed a machine that always wins. The thinking, thoughts, challenges that I saw today, the "will this work" statements, the "I want to try this", "I want to test this idea" were statements that showed engagement in the learning. The frustration as one student would beat the machine, however the machine was learning so when the next student tried the same combination, they lost. Watching students as the explained the rules of the game I saw students communicating clearly, through words as well as actions.

Note: the colours in the pdf seem to be incorrect
• 5 red sweets • 11 yellow sweets • 13 purple sweets • 12 brown sweets • 13 blue sweets
could be
• 5 red sweets • 11 yellow sweets • 13 purple sweets • 12 orange sweets • 13 blue sweets

Also problem solving with the students as we worked through the instructions, while text is a great form for communication, pictures would have helped show layout of the cards. Also using better colours in the task of the beans, I have still to figure out why brown jellybeans exist, as I have yet to see that as a colour in the packet.

I must say that this was an enjoyable lesson for many of the students and others around as Jelly Beans were handed to the winners, as well as losers.

There is also another one around tic tac toe

What is a programming about?
How can computers win at games?
Explore programming without worrying about programming languages and investigate how a computer is able to win at board games like chess, by writing instructions to play perfectly at noughts and crosses followed by a tournament to find the best.
Maybe an extension could be to 3d print the objects required to play? or lasercut pieces and a board...