Show them the ppt to review lesson 6 expressions and vocabulary, then use the coin-flick board game in groups or pairs (modified from another poster's template, thanks!). They put a coin (or magnet or whatever) on START and flick it, and wherever it lands, they have to say the expression. If they're right, they sign their name or write their own symbol or whatever. The student with the most signatures at the end wins. If they flick outside of the board, they miss a turn. If they flick onto a space that's already been taken, they go again until they get to an empty space. And the arrow is a free space where they can sign without having to say anything.