Year 4 Conjecturing and generalising

This activity focuses on similarities and differences between shapes.

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?

These sixteen children are standing in four lines of four, one behind the other. They are each holding a card with a number on it. Can you work out the missing numbers?

These eleven shapes each stand for a different number. Can you use the number sentences to work out what they are?

There are nasty versions of this dice game but we'll start with the nice ones...

In this activity, the computer chooses a times table and shifts it. Can you work out the table and the shift each time?

This task develops spatial reasoning skills. By framing and asking questions a member of the team has to find out what mathematical object they have chosen.

Use two dice to generate two numbers with one decimal place. What happens when you round these numbers to the nearest whole number?

Four strategy dice games to consolidate pupils' understanding of rounding.

Can you find any two-digit numbers that satisfy all of these statements?

I'm thinking of a number. My number is both a multiple of 5 and a multiple of 6. What could my number be?

Each light in this interactivity turns on according to a rule. What happens when you enter different numbers? Can you find the smallest number that lights up all four lights?

Can you dissect an equilateral triangle into 6 smaller ones? What number of smaller equilateral triangles is it NOT possible to dissect a larger equilateral triangle into?