Science at key stage 3 (Year 7)

Unit 7K: Forces and their effects
Section 1: Where do we come across forces?

Objectives

Children should learn:

about a range of forces
how to measure forces

Activities		Outcomes
		Children:
Review what pupils know about forces by presenting them with a number of quick activities, eg weighing objects with a forcemeter pushing an ice cube and a wooden block across a smooth surface tying or untying a knot in plastic and natural string explaining how the time taken for a piece of paper to fall varies with the amount it is crumpled up pulling strong magnets apart stretching a spring and questions, eg What force is acting here? What is its direction? Why are the forces changing? Discuss observations and answers with pupils.		identify forces, eg magnetic attraction, friction use a forcemeter explain the observations they make, eg the plastic string is smoother so there is less friction and it is easier to untie

Points to note

This activity is intended to help teachers find out what pupils know and understand about forces from work in key stage 2. Teachers will need to take this into account in later work.
Pupils are likely to have encountered a range of forces at key stage 2 and to have measured them using a forcemeter.

Sections in this unit

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This unit is divided into sections. Each section contains a sequence of activities with related objectives and outcomes. You can view this unit by moving through the sections or print/download the whole unit.


	1. Where do we come across forces?
	2. a. Why do things float?
	3. b. Why do things float?
	4. c. Why do things float?
	5. How do different materials stretch?
	6. Checking progress
	7. What is weight?
	8. a. What does friction do?
	9. b. What does friction do?
	10. c. What does friction do?
	11. What affects how quickly a car stops?
	12. Reviewing work

Science at key stage 3 (Year 7)

Objectives

Activities

Outcomes

Points to note

Sections in this unit