Measurement
Length, mass, capacity, area, perimeter and volume, with real tools and units.
Lessons
Measure It: Length, Time and Mass in the Real World
Whose foot is the right ruler? How long is a minute, really? Is a kilogram of feathers lighter than a kilogram of rocks? Four lessons where students measure length, time and mass with real tools, then use their own data to settle an argument.
Fence It, Fill It: Area and Perimeter
Which mat is really the biggest? Does the same fence always hold the same garden? Can the same rug need more edging? Four lessons where students tile, stretch rope and chalk the schoolyard to find out that area and perimeter measure different things.
Online practice
- Flat or solid shapes UKG
- Count the sides of flat shapes UKG
- Count the faces of solid shapes UKG
- Which is longer or shorter UKG
- Compare lengths Class 1
- Length in units from zero Class 1
- Answer questions about a data table Class 1
- Length from a ruler that does not start at zero Class 2
- How much longer Class 2
- Add lengths Class 2
- Jump on a number line Class 2
- Answer questions about a data table Class 2
- Convert metres and centimetres Class 3
- Convert centimetres and millimetres Class 3
- Area of rectangles Class 3
- Area of squares Class 3
- Area from rows of unit squares Class 3
- Perimeter of rectangles Class 3
- Perimeter of squares Class 3
- Find a missing side from the area Class 3
- Find a missing side from the perimeter Class 3
- Area of shapes made from two rectangles Class 3
- Add and subtract masses in grams Class 3
- Add and subtract masses in kilograms Class 3
Free tools
Area and Perimeter Builder
Draw shapes on a square grid and watch the area and perimeter count up. Challenges ask for shapes with the same area but different perimeters.
Measurement Converter
Convert length, mass, volume, temperature and time between metric and imperial units, with the working shown and a sense-of-size picture for each.