Read the storyline. The object of the game is to reverse the spells placed upon the royal family of Computation Castle by the evil witch. All five family members have been turned into various animals. Their only hope is you. Use your math skills to mix and create the correct potions to turn them back to their human forms.
PPT is the introduction to a lesson on exchanging money - Wizard money for Muggle money. Using division in introduction to work out exchange rate, then multiplication and addition to change money.
Resources for a Harry Potter themed lesson with Y7 on converting mixed and improper fractions. There are bronze, silver and gold versions of the main worksheet to differentiate by ability. . The idea is that on the left of the potion they write a mixed fraction followed by an ingredient of their choice, and on the right they must convert it to an improper fraction. e.g. "1 1/2 eyeballs = 3/2 eyeballs".
Using the Harry Potter and Craig Barton's excellent ice cubes & fire cubes ideas this powerpoint talks through some examples of calculating with simple addition and subtraction of negative numbers and includes some questions for the children to try.
Dragons- Multiply and divide
Match the sum on the dragon to the answer on the castle.