1 out of 3
Can you estimate the mass of insects caught by spiders in the UK each year?
A collection of Secondary short problems.
1 out of 3
How many rectangles can you see? Are they all the same size? Can you predict how many rectangles there will be in counting sticks of different lengths?
3 out of 3
Explore the effect of combining enlargements.
1 out of 3
These Olympic quantities have been jumbled up! Can you put them back together again?
1 out of 3
What numbers would you put on this number line as it goes under the sea level?
2 out of 3
In this game for two players, take it in turns to shade one petal, or two petals next to each other. Is it better to go first or second?
1 out of 3
Can you spot the mistake in this video? How would you work out the answer to this calculation?
2 out of 3
What do the numbers shaded in blue on this hundred square have in common? What do you notice about the pink numbers? How about the shaded numbers in the other squares?
2 out of 3
What do you think is going to happen in this video clip? Are you surprised?
