Here's a connect 4 game I have made to use in part 1 or 2.
Incase you don't know the game: Working in pairs the students have a color pen each and decide who will be 1 and 2 by playing rock, scissor, paper. Then number one chooses a square and marks an 0 (or one played can be 0 and one can be X instead of colors) and says the expression: I have ____ _____s. Then number 2 has their turn and choose a square, saying the correct expression. The winner is the student who can get 4 in a row, either horizontally, vertically or diagonally. They can try and stop their partner getting this by blocking their path.