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"Lower Secondary"
In 2018 Cape Town was in danger of running out of water. Half a billion people in the world face severe water scarcity all year round. Half of the world’s largest cities experience water scarcity
In 2018 the City of Cape Town rationed everyone to 87 litres a day and published this […]
The picture shows you how to use a paper clip to draw circles. You just need to open out the paper clip as shown,
Draw a circle and mark 24 points equally spaced around the circumference. To do this, draw a circle and mark the centre, and mark your first point on […]
How quickly can you find me?
I am a whole number less than 1000.
The product of my digits is 225.
I am not a multiple of 5.
Am I a multiple of 13?
Am I real? Am I rational? Am I irrational?
Now divide me by 11. Is the answer real? […]
Copy this pattern. You could use toothpicks or paper sticks or draw the pattern on isometric paper (download here).
Make or draw the next 3 patterns in the sequence. How would you explain to someone else on the telephone how to do this when you could not point to the diagram?
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JUST A MINUTE
How long is a minute? What can we do in a minute?
You will need: a stopwatch, paper & pencils (or other recording implements).
Activity 1: Estimate a minute
Sit with your head on your arms so that you will not be distracted. When the timekeeper says […]
If you are at row 0 column 1 (0 ; 1) how many columns do you go across and how many rows back would you go to get to row 2 column 4 (2 ; 4)?
Give directions for getting from row 1 column 0 (1 ; 0) to row 2 column […]
What is the volume of this cuboid?
How many other cuboids with whole number dimensions have the same volume?
Do any of them have the same surface area?
Which has the biggest surface area? Which has the smallest?
How many have a square cross section?
Click here for Notes for Teachers.
[…]
This activity is about rectangles with whole number dimensions. With other lengths and breadths there are infinitely many possible rectangles so here we just stick to whole numbers.
How many rectangles can you make with perimeter 12 units?
What do you know about rectangles? What is the smallest rectangle that you can […]
Work out the different numbers to replace the question marks.
What do you notice about the patterns in these calculations?
Can you explain why this pattern occurs?
Describe and explain this pattern.
What do you think the patterns for other multiples look like, for example multiples of 2 or 3 or 4 or 5?
Download this sheet and shade in the patterns of the multiples.
Why do you think that in each pattern […]
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