Integers – Positive and Negative numbers

https://nrich.maths.org/content/id/9941/Up%2C%20Down%2C%20Flying%20Around.docx.pdf

The Balloon Game This is a game for two players. Each places their balloon on the game board, pointing to zero: You have two piles of cards; operation cards (add/subtract) and number cards (-9 to +10). A positive number is equivalent to puffs of hot air; if you add hot air to your balloon you will rise, and if you subtract hot air you will sink. A negative number is equivalent to sandbags; if you add sandbags your balloon will sink and if you subtract sandbags your balloon will rise. Take it in turns to turn over an operation card and a number card. For example, if you turn over add -7, this is like adding 7 sandbags, so your balloon will move down 7 spaces. To win, you either need to get to the top, or you need to be afloat when your opponent sinks to the bottom.

https://nrich.maths.org/content/id/9941/Up%2C%20Down%2C%20Flying%20Around.docx.pdf

https://nrich.maths.org/content/id/9941/NumberCardsOperationsWords%20%282%29.pdf

https://nrich.maths.org/content/id/9941/NumberCardsOperations%20%283%29.pdf

https://nrich.maths.org/content/id/9941/BalloonGamePieces%20%282%29.pdf

https://nrich.maths.org/content/id/9941/BalloonGameBoard%20%281%29.pdf