# Lesson 3 — Closing off 1.1 + intro 1.2

Lessonplan
Lesson plan
Opening — 5 min
- Lesson plan
- Goals
- Tug of war — which side applied more force? what effect did that have?

Class phase — 15
- Balanced and unbalanced forces
• Examples — force the students to come up with examples
• Effects — let the students fill in the table of balanced and unbalanced with stationary and moving.

Solo phase — 20 min
- Fill in the table
- Start the homework

Closing — 10 min
- discuss the table
- What have you learned + goals
- Next lesson – homework
Learning goals
• Explain the difference between balanced and unbalanced forces
• Describe the effect of balanced forces
• Describe the effect of unbalanced forces

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Slide 1: Tekstslide
Natuurkunde / ScheikundeMiddelbare schoolhavoLeerjaar 1

In deze les zitten 24 slides, met tekstslides en 1 video.

## Onderdelen in deze les

Lessonplan
Lesson plan
Opening — 5 min
- Lesson plan
- Goals
- Tug of war — which side applied more force? what effect did that have?

Class phase — 15
- Balanced and unbalanced forces
• Examples — force the students to come up with examples
• Effects — let the students fill in the table of balanced and unbalanced with stationary and moving.

Solo phase — 20 min
- Fill in the table
- Start the homework

Closing — 10 min
- discuss the table
- What have you learned + goals
- Next lesson – homework
Learning goals
• Explain the difference between balanced and unbalanced forces
• Describe the effect of balanced forces
• Describe the effect of unbalanced forces

#### Slide 2 -Tekstslide

Lesson plan
•  Recap previous lesson
• Types of forces
• Balanced and unbalanced forces
• Working on exercises

#### Slide 3 -Tekstslide

Goals
• Give examples for different types of forces
• Explain the difference between balanced and unbalanced forces
• Described how they effect objects
• Calculate resultant force

Class Phase

#### Slide 5 -Tekstslide

What did we cover
previous Lesson?

#### Slide 7 -Tekstslide

Types of forces
• Gravitational force
• Electrostatic force
• Magnetic force
• Friction
• Air resistance
• Upthrust
• Tension

Air resistance

Upthrust

#### Slide 10 -Tekstslide

§1.2 Balanced and unbalanced
forces

Tug of war

#### Slide 12 -Tekstslide

Balanced and unbalanced forces

• When there is a pair of forces
• Pulling in opposite or similar sides

#### Slide 13 -Tekstslide

The effects of:

Balanced and unbalanced forces

#### Slide 14 -Tekstslide

Stationary: When an object is not moving, standing still

Constant velocity: When an object is moving at a constant speed

Acceleration: When the speed of an object is increasing (or decreasing)

#### Slide 16 -Video

balanced forces
Unbalanced forces
stationary objects
Moving objects

#### Slide 17 -Tekstslide

balanced forces
Unbalanced forces
stationary objects
stays stationary
starts moving
Moving objects
keeps the same speed
accelerates/ decelerates

Resultant force

Solo Phase

#### Slide 21 -Tekstslide

Goals
• Explain what is meant by balanced and unbalanced forces
• Described how they effect objects
• Calculate resultant force

Next lesson
Homework