### Planning and Activities

**Day 1 Teaching**

Count backwards and forwards through zero using a counting stick. Order positive and negative numbers.**Group Activities: T with Y3**

Y3 -- Practise ordering numbers −10 to 10; complete inequalities using < or > symbols. Some children will just practise ordering numbers −5 to 5.

Y4 -- Practise ordering numbers −10 to 10. Write three consecutive negative numbers, given the ‘middle’ number. Complete inequalities using < or > symbols. Some children will also answer and create subtractions with negative answers.

**Day 2 Teaching**

Model increase and decrease of temperature above/below zero using Thermometer ITP.**Group Activities: T with Y4**

Use the in-depth problem-solving investigation ‘Sea Level’ from NRICH as today’s group activity.

Or, use these activities:

Y3 -- Order positive and negative numbers. Find the difference between pairs of temperatures.

Y4 -- Order positive and negative numbers. Investigate temperatures in a range of locations and solve problems relating to temperature differences.