Area Concept requires users to estimate and then calculate the area of rectangles and compound shapes (more Info).
Finding the area of rectangles
Finding the area of compound shapes
Area counting with Coco

Inside Cubes explores the cubic metre, including how many cubic centimetres, leading to the formula for volume (more info).
How big is a cubic metre?
Inside a cubic metre
What's in a cube? level 1
What's in a cube? level 2
Working it out!

NLVM: Time manipulatives
Time: analog and digital clocks
Time: match clocks
Time: what time will it be?
