NRICH: I Have a Box
NRICH (University of Cambridge)

In this activity, having access to a mystery box will spark children’s imagination and encourage them to describe what they notice about the box.

DK Find Out! Forces and Motion

Learn about force, weight and mass, gravity, laws of motion, pressure, friction, and more.

DreamUp: Density in Space

Do you know why things float in space? It might not be why you think!

Crash Course Kids: Hunting for Properties - Episode #9.1
Crash Course Kids

In this episode of Crash Course Kids, Sabrina talks about what properties are and how we can measure them to tell us more about an object.

youcubed: Estimating (K-12)
youcubed (Stanford University)

Estimating might sound like an activity from young children, and although it is fantastic for them to estimate how many pieces of candy are in a jar or how many crackers come in a box, older students can also benefit from these and take them to the next level.

Illuminations: The Weight of Things
Illuminations (National Council of Teachers of Mathematics)

This lesson introduces and provides practice with the measurable attributes of weight.

Illuminations: Block Pounds
Illuminations (National Council of Teachers of Mathematics)

Students explore the use of variables as they solve for the weights of objects using information presented in pictures.

Illuminations: Whale Weight
Illuminations (National Council of Teachers of Mathematics)

In this lesson, students investigate relationships between numbers, identify number patterns, represent the information in graphic chart form, and generalize the results of an investigation.

Illuminations: Rescue Mission Game
Illuminations (National Council of Teachers of Mathematics)

Students play a game to learn about the four forces of flight: lift, drag, thrust, and weight.

NRICH: Mud Kitchen
NRICH (University of Cambridge)

When playing in this mud kitchen, children will be using the language of size and capacity to choose utensils for different tasks.

NRICH: Cooking with Children
NRICH (University of Cambridge)

By following some simple recipes in this task, children can practise the skills of measuring and counting ingredients.

NRICH: Presents
NRICH (University of Cambridge)

Comparing the wrapped presents in this activity will give children the chance to explore and discuss weight, including the idea that large objects aren’t necessarily the heaviest.