Grade 3 light and sound
How light travels and makes shadows and colours, and how sound is made and heard. Here is what we have for Grade 3.
Lessons
Earth and Sky at Home
Make a rainbow on the kitchen floor, grow crystals on a windowsill and build a cloud in a jar. Three classic home experiments that actually work, with the real science explained for grown-ups.
Bouncing Light: Mirrors, Water and Colour
Steer a beam around a wall with mirrors, find out why a pencil looks broken in water, and split white light into the colours hiding inside it. Three hands-on lessons on reflection, refraction and colour that build on shadows and work in any climate.
Printable worksheets
Online practice
Free tools
Sound Wave Lab
Play a tone, change its pitch and loudness, and watch the wave change shape. Includes a live microphone wave view to see your own voice.
Sun and Shadow
Move through the day and the year to see where the Sun is in the sky, how long a stick's shadow is, and how many hours of daylight any latitude gets.
Light and sound in other grades:KindergartenGrade 1Grade 2Grade 4Grade 5Grade 6Grade 7Grade 8All grades