Step 13: Negative Numbers Year 4 Place Value Learning Video Clip
Jake is visiting the Sea Life Aquarium Roma, and Fabio is setting up his ice cream cart outside. Using your place value knowledge, help them sort out the problems they encounter during the day.
More resources for Autumn Block 1 Step 13.
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Discussion points for teachers
- How many degrees too warm is the freezer? Discuss the difference between the actual freezer temperature and the ideal temperature and calculate the difference.
- How many degrees too cold is the fridge? Discuss the difference between the actual fridge temperature and the ideal temperature and calculate the difference.
- Fabio thinks that the temperatures have adjusted by the same amount. Do you agree? Discuss the change in degrees and determine whether they have both changed at the same rate. Determine how many degrees they have both changed.
- By how many more degrees do the fridge and freezer temperatures need to change to be at their ideal temperatures? Discuss the number of degrees back or forward needed to arrive at the ideal temperatures.
- Help Jake to work out the range of depths where the sea creatures are likely to be found in the ocean. Discuss the possible depths that the different sea creatures could live at. This question is open-ended for children to explore.
- If Jake withdraws €50 how much money will Jake be overdrawn? Discuss how much below zero the balance will drop if 50 is taken away from 30.
- How much money is Fabio short? Discuss finding half of the predicted earning that day, then take that (50) away from 35.
Optional discussion points:
Discuss what the possible temperature of the freezer would be if it rose between five and ten degrees from the ideal temperature.
Discuss what the possible depths of the different sea creatures would be if the total depth of the tank was 2,000m.
National Curriculum Objectives
Mathematics Year 4: (4N5) Count backwards through zero to include negative numbers
Mathematics Year 4: (4N6) Solve number and practical problems that involve 4N1 - 4N5 and with increasingly large positive numbers
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