Fun and interesting activity to practice adding and subtracting decimals. Can also be used to develop students' budgeting skills.
There are 12 character cards to be 'collected'. Students must calculate the correct height of each character using the information provided on their card. Once they know their heights they must select an appropriate costume from the list of fancy dress costumes provided. They can be given a budget (e.g £450) to make the task more challenging. They need to use the characters' heights to ensure they select a costume of the correct size (petite, regular, tall) - the price of each costume depends on the size being bought!
Examples of the information given on the character cards:
"Jim is the same height as a 2m bookcase if he stands on a pile of books which is 0.43m tall.
What is Jim’s height?"
"Sarah draws a line on the wall to mark her height.
Her older sister’s mark is 0.09m above hers. The writing next to it says 1.68m
Sarah realises she was wearing high heels which are 0.07m high.
What is Sarah’s height?"
"Olivia, Rob and Dave learnt an interesting fact – that a person’s arm span is the same as their height. The three compare arm spans.
Dave’s arm span is 0.06m longer than Rob’s.
Olivia’s arm span is 0.1m shorter than Dave’s.
If Rob’s arm span is 1.69m, what is Olivia’s height?"
I have used this task with a top set Year 7 class, which is equivalent to Grade 6 in America.