Recognise, measure and draw angles
In-depth investigation: Nine-pin Triangles
Draw triangles; measure and classify the angles of each triangle. Nine-pins Triangles from nrich.maths.org.
Mental and written addition/subtraction
In-depth Investigation: Triple Trouble
Write an addition of three 4-digit numbers where the answer is between 28,550 and 28,650.
Mental addition & subtraction strategies
In-depth investigation: Two and Two
Children investigate possible numerical values for the letters in ‘alphanumeric’ addition calculations. Two and Two from nrich.maths.org.
Place value in decimals; rounding
In-depth investigation: Spiralling Decimals
Take turns to place a decimal number on a spiral number line. Spiralling Decimals from nrich.maths.org.
Multiples & factors; mental x/÷ strategies
In-depth Investigation: LCM Squares
Children use trial and improvement to find the smallest possible total on a square of lowest common multiples.
Angle theorems; draw angles in polygons
In-depth investigation: Olympic Turns
Children explore photos of some Olympic sports that involve turns and angles. Olympic Turns from nrich.maths.org.