Grade 3 Science — Term 2, Week 8

5 day-plan(s) · WeLearn JA SCI T2 G3

Grade 3 Science · Term 2, Week 8 · 60 minutes

Objectives	Explain that sound is made by vibrations.
Materials	Ruler, elastic band, drum with rice, tuning idea
Key vocabulary	sound, vibration, vibrate, wave
Engage (starter)	"What is happening when something makes a sound?"
Develop (main)	Interactive: twang rulers and bands and watch rice jump on a drum; feel vibrations; tap-to-reveal that vibration makes sound.
Plenary (close)	What makes a sound?
Assessment	Links sound to vibration.
Teacher notes	Vibration is the core idea.

Grade 3 Science · Term 2, Week 8 · 60 minutes

Objectives	Investigate that sound travels through solids, liquids, and gases.
Materials	String telephone, water tub, desk
Key vocabulary	travel, medium, solid, liquid, gas, ear
Engage (starter)	"Can we hear a tap through the desk?"
Develop (main)	Interactive: listen through a desk and a string telephone; discuss sound travelling through solids and air; tap-to-reveal that sound needs a medium.
Plenary (close)	Name something sound can travel through.
Assessment	Understands sound travel.
Teacher notes	Sound travels through many materials.

Grade 3 Science · Term 2, Week 8 · 60 minutes

Objectives	Explain what changes volume and pitch.
Materials	Drum, bottles with water, rubber bands
Key vocabulary	volume, loud, soft, pitch, high, low
Engage (starter)	"How do we change how loud or high a sound is?"
Develop (main)	Interactive: change volume by how hard we hit; change pitch with bottle water levels and band tightness; tap-to-reveal volume and pitch.
Plenary (close)	How do we make a higher sound?
Assessment	Explains volume and pitch.
Teacher notes	Protect ears; avoid very loud sounds.

Grade 3 Science · Term 2, Week 8 · 60 minutes

Objectives	Describe how we hear and how to protect our hearing.
Materials	Ear diagram, sound pictures
Key vocabulary	ear, hearing, noise, protect, damage
Engage (starter)	"How do very loud sounds affect our ears?"
Develop (main)	Interactive: discuss how ears detect vibrations; sort safe and harmful noise levels; tap-to-reveal protecting our hearing.
Plenary (close)	Name one way to protect your hearing.
Assessment	Describes hearing and safety.
Teacher notes	Never put anything in the ears.

Grade 3 Science · Term 2, Week 8 · 60 minutes

Objectives	Consolidate making, travelling, volume, pitch, hearing.
Materials	Sound makers, review cards
Key vocabulary	review, sound, vibration, pitch
Engage (starter)	"Sound scientist challenge!"
Develop (main)	Interactive: make sounds and review vibration, volume, and pitch at review stations.
Plenary (close)	What makes a sound?
Assessment	Station accuracy.
Teacher notes	Reinforce sound comes from vibration.