Year 4 Conjecturing and generalising

How will you complete these interactive Venn diagrams?

This activity focuses on similarities and differences between shapes.

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.

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?

Using the picture of the fraction wall, can you find equivalent fractions?

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?

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

Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a parallelogram.

Five children are taking part in a climbing competition with three parts, where their score for each part will be multiplied together. Can you see how the leaderboard will change depending on what happens in the final climb of the competition?

There are three tables in a room with blocks of chocolate on each. Where would be the best place for each child in the class to sit if they came in one at a time?

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?