Decimal number line Student activity Play

Decimal number line Simulation Play

Decimals Whiteboard presentation Play

Decimals Class activity Play

Decimals Student activity Play

Decimals and fractions Class activity Play

Decimals and fractions Whiteboard presentation Play

Decimals in the coordinate system Whiteboard exercise Play

Deduction Student activity Play

Deduction Whiteboard exercise Play

Defence mechanisms of the immune system against parasites Animation Play

Defining inequalities in a coordinate system Simulation Play

Defining inequalities in a coordinate system Student activity Play

Defining inequality in a coordinate system Simulation Play

Describing data – mean, median, mode Student activity Play

Describing functions in words Student activity Play

Describing position Whiteboard exercise Play

Describing position Animation Play

Describing position in a plane Whiteboard exercise Play

Describing position on the city plan Whiteboard exercise Play

Describing position – part 1 Student activity Play

Describing position – part 2 Student activity Play

Determination of the number of erythrocytes Animation Play

Determining the empirical formula Animation Play

Determining the number of bacteria in a sample Animation Play