Why do this problem?
In this problem, students have the opportunity to practise adding and subtracting positive and negative numbers in an engaging context.
As students become hooked on the game, they may also like to explore strategies that improve their chances of winning, and consider the probability of getting different numbers.
This printable worksheet may be useful: Connect Three.
Demonstrate how to play the game to the whole class, perhaps by inviting two volunteers to have a go. (You can click the purple cog in the top right corner to access the settings menu, and choose whether to play against the computer or not.)
After the introduction students could play in pairs on a computer or tablet, or if computers are unavailable, this worksheet
could be printed and handed out instead - students will need dice or spinners with the correct numbers.
Once students have had an opportunity to play the game a few times, discuss the key questions below, and then perhaps allow students a couple more games to try out any strategies they have thought of.
Are there some numbers that we should be aiming for? Why?
Are certain numbers easier to 'cover' than others? Why?
Do certain numbers contribute to more winning lines?