YR1_T3_LSN3

• Science
• Middelbare school
• havo, vwo
• Leerjaar 1

GET READY

• Macbook
• Join this lessonup

PLAN FOR TODAY

• Entry ticket §3.2
• Check hw of §3.2 (Stickers!)
• Theory and notes of §3.3
• Speed experiment
• Start exercises of §3.3

PREVIOUS LESSON?

Which word matches the definition "a force created by using your muscles"?

What force is labeled with the letter "A"?

Does the cyclist move forwards or backwards? Explain please.

GET READY

• Textbook (homework exercises §3.2)
• Macbook (answer sheet on classroom)
• Coloured pen or pencil.

HW CHECK

• Check the answers on classroom
• Check your own work.
• Use a coloured pen/pencil.
• Correct your own work.
• Ask questions.

p. 100-103

GET READY

• Notebook (fresh page).
• Macbook (this lessonup).
• Pen & highlight marker.

§3.3 SPEED

TEXTBOOK PAGES 104-109

§3.3 SPEED

• I can explain what speed is.
• I can calculate the speed in m/s and in km/h (when you know the distance and time).
• I can calculate the distance when you know the time and the speed.
• I can calculate the time when you know the distance and the speed

p. 104-105

§3.3 SPEED

KEY WORDS:

• Motion
• Speed
• km/h
• m/s
• Distance
• Time

p. 104-105

WHAT IS SPEED?

Speed is a measure of how fast an object moves. In other words, how far of a distance an object moves in a certain amount of time. 

Speed is measured in: 

meters per second (m/s)

Kilometers per hour (km/h)

p. 104-105

Average speed

As an object moves its speed is constantly changing, though this is very difficult to measure.  Therefore we calculate the average speed, which is the speed over a certain amount of time.

Here a car is constantly changing 

its speed, but we only calculate the 

average speed throughout the journey.

p. 104-105

Calculating speed

To calculate speed 2 things are needed:

The distance in meters (or kilometers)

The time in seconds (or hours)

The formula for calculating speed is:

The unit for speed is m/s (or km/h)

p. 104-105

EXAMPLE QUESTION

• Ms de Vreede drives her car to school. It takes her 15 minutes and she lives 8 km away. 
• Calculate her speed in m/s.
• Distance = 8 km = 8000 m
• Time = 15 min x 60 = 900 s 

SUMMARY OF THE DAY:

• WHAT DID YOU LEARN TODAY?
• WRITE THIS DOWN IN 2-3 SENTENCES MAXIMUM.

p. 98-99

HOMEWORK FOR NEXT LESSON:

• Study WRTS list §3.1-§3.3
• Complete the exercises on pages 106-109
• Read & Highlight §3.4
• Bring a ruler/triangle
• Bring coloured pencils
• Bring a calculator
• Study for the QUIZ!!

p. 100-103

Study for the quiz:

• Study WRTS list §3.1-§3.3
• Study your notes of §3.1-§3.3
• Review the exercises §3.1-§3.3
• Read textbook §3.1-§3.3
• Bring a ruler/triangle
• Bring coloured pencils
• Bring a calculator

p. 92-109