# Surprise!

### Surprise!

Curiosity is triggered when something unexpected happens. These problems aim to draw students in by offering that element of surprise.

### Next-door Numbers

##### Age 5 to 7Challenge Level
Florence, Ethan and Alma have each added together two 'next-door' numbers. What is the same about their answers?

### Light the Lights

##### Age 5 to 7Challenge Level
Investigate which numbers make these lights come on. What is the smallest number you can find that lights up all the lights?

### How Would We Count?

##### Age 5 to 11Challenge Level
An activity centred around observations of dots and how we visualise number arrangement patterns.

### Square Surprise

##### Age 5 to 11Challenge Level
Why do you think that the red player chose that particular dot in this game of Seeing Squares?

### Pouring Problem

##### Age 7 to 11Challenge Level
What do you think is going to happen in this video clip? Are you surprised?

### Consecutive Numbers

##### Age 7 to 14Challenge Level
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

### Subtraction Surprise

##### Age 7 to 14Challenge Level
Try out some calculations. Are you surprised by the results?