Roman, Rae and Trig make it to Dr S. Cape’s study escape room. There, they use addition and subtraction of fractions to solve a number of puzzles including the fractions of a candle melted, the length of a tassel required and completing puzzle pieces.
More resources for Autumn Block 3 Step 5.
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Discussion points for teachers
1. What remains of the candle?
Discuss the calculation required and how to convert fractions to have the same denominators
2. Who is correct? Prove it.
Discuss the possible methods available to solve the calculation.
They are both correct. They are using two different methods that will still lead to 1/24
3. What could the correct tassel length be?
Discuss the calculation required, and the need to work backwards from the answer.
5/10 m or 50cm
4. Complete the puzzles using the squares. The squares can only be used once in each calculation.
Discuss a method. Is trial and error suitable? What do we already know about the numbers that are already there?
5. What could the final missing piece be? This question is open-ended for the children to explore.
Discuss the fractions that could be used to complete the calculation and a method for working this out.
Various answers, for example: 39; and 21;
National Curriculum Objectives
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