Tag: maths

Card Game: Sum War

Anya and I came up with a new card game — sum war. It’s a bit like war, but you throw two cards. The person with the higher sum wins all of the cards & puts them on the bottom of their stack. Keep going until someone has all of the cards. There’s obviously lots of addition involved, but the game uses estimation too (I have a 5 and a 7, you have a 5 and a 9 … you win without actually adding anything).

Visual Mathematics: Division

I’ve found a lot of worksheets for visualizing addition and subtraction, and even a few for multiplication. But I could not find any for division. To fill this gap, I made a quick cat themed division visualization worksheet for Anya.

For the problem X รท Y, there are X cats in the row below it. Circle groups of Y cats, and count the number of groups. If there are no cats “left over”, then you’ve got the answer. There is one with cats “left over” to introduce the idea of a remainder. Primarily, though, I wanted to focus on the idea of circling groups of Y and counting the groups to find the answer.