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Measures
Objectives
To use trial and improvement to solve a logic problem.
Resources
No additional resources are required for this lesson
Vocabulary
capacity | problem solving
Today's Lesson
What to Get Ready
Read through the Capacity challenge below so that you know what is expected before the lesson.
Main Activity
Support your student in working through the problems. Your student can use the 📄 capacity problem solving sheet to record their answers.
A group of eight children in Class 6 were measuring water using measuring cylinders. They coloured the water to make reading the scales easier.
They lined up the cylinders in two neat rows, each labelled with a child's name and the amount they had measured out.
Then Harry opened the window and the wind blew most of the labels onto the floor! "Oh! Harry!" they all wailed.
Can you re-label the cylinders for them?
![[W12.04] Capacity image.jpg](/media/year2-maths/15-step-twelve/assets/101031581-w1204-capacity-image.jpg "[W12.04] Capacity image.jpg")
Here is the information you need to solve the puzzle:
Ahmed had measured out just a thousand millilitres and Belinda twice as much as Ahmed.
Grace had measured out three-quarters of the amount that Belinda had done and Freddie had half the amount that Ahmed had measured out.
Which were their cylinders?
Callum had coloured his water blue. How much did he measure out?
Ellie had coloured her water pink and Dan coloured his orange. How much did they measure out?
"Don't drink that!" Harry had laughed, pointing at Dan's cylinder, "It's not orange juice!" As his hand stretched out he knocked over his red liquid. "Oh! Harry!" they all wailed again.
How much was left in Harry's cylinder after the accident?
Once your student has completed the 📄 capacity problem solving sheet, go through with them and check that their solitons match the clues of the puzzle.