Things are roughened up and friction is now added to the approximate simple pendulum
Are these statements relating to calculation and properties of shapes always true, sometimes true or never true?
On the planet Vuv there are two sorts of creatures. The Zios have 3 legs and the Zepts have 7 legs. The great planetary explorer Nico counted 52 legs. How many Zios and how many Zepts were there?
Is there an efficient way to work out how many factors a large number has?
Four friends must cross a bridge. How can they all cross it in just 17 minutes?
Aisha's division and subtraction calculations both gave the same answer! Can you find some more examples?
Think of a number and follow my instructions. Tell me your answer, and I'll tell you what you started with! Can you explain how I know?
Many numbers can be expressed as the difference of two perfect squares. What do you notice about the numbers you CANNOT make?
Watch these videos to see how Phoebe, Alice and Luke chose to draw 7 squares. How would they draw 100?
