What remains?

What it is about

Subtract by taking away or finding a difference with objects and number lines.

Year 1 · 5–6 years · 30 challenges

Before you begin

• Count small sets and compare familiar objects.

What the class will do

1. Choose and explain · 30 challenges

   What remains?

   Subtract by taking away or finding a difference with objects and number lines.

Using it in class

Teacher supplies the objects or drawings explicitly requested in each prompt; the screen does not draw subtraction models or number lines. Read prompts aloud. Discuss the difference between objects removed, objects remaining, and unmatched objects when comparing two sets.

Give everyone time to think and discuss before one pupil acts at the board. The class explains and confirms together; hints and explanations stay until you move on.

Use an up-to-date browser on a computer connected to a whiteboard or shared display. Touch, mouse and keyboard; optional audio and reduced motion. No pupil accounts or personal devices.

Choose from 5 challenges up to the full activity. Discussion determines the duration: you set the pace.