Use their knowledge of the order of operations to carry out calculations involving the 4 operations Worked example: Order of operations (PEMDAS) - Khan Academy Year 6 > Math

The properties of the different states of matter (solid, liquid and gas) in terms of the particle model, including gas pressure States of matter - GCSE Chemistry (Single Science) Revision - BBC Year 7 > Chemistry

Common factors - Maths - Learning with BBC Bitesize