Decimals Whiteboard presentation Play

Decimals Student activity Play

Decimals and fractions Whiteboard presentation Play

Decimals and fractions Class activity Play

Deduction Student activity Play

Deduction Whiteboard exercise Play

Demonstration or proof? Animation Play

Demonstration or proof? Student activity 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

Determining the proportions of matter in the ecological pyramid Animation Play

Diagonals of polygons Student activity Play

Different questions Whiteboard exercise Play

Different questions about the same operation Whiteboard exercise Play

Different questions about the same operation. How many times more? How many times less? Student activity Play

Different questions about the same operation. How much more? How much less? Student activity Play