YR1_T3_LSN3

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

iubioub

Materials

• Computer (Lessonup)
• Textbook
• Notebook
• Pencil case

I am ready for this lesson:

• I am in the correct seat.
• My jacket is in my locker.
• My telephone is at home or in my locker.
• I have all my materials ready as required by the checklist.
• I do not have any food / drinks and/or chewing gum.

Are we ready?

😒🙁😐🙂😃

iubioub

During this lesson I will .......

• ... be quiet during classroom instructions.
• ... raise my hand when I have a question.
• ... listen when others are speaking.
• ... be an active and involved participant.
• ... only touch/use my own materials.

iubioub

A WARNING

DIFFERENT SEAT  (if possible)

TIME OUT: 5 MIN. MAX CORRIDOR (max 1 at the time)

REMOVAL TO B022

iubioub

PLAN FOR TODAY:

1.

2.

3.

4.

15 min: HW check

• Recap questions
• Correct your HW

30 min: exercise T3.2 + break

• Drawing forces
• 5 min break

25 min: explanation T3.3

• Learning goals
• Key words
• Notes
  

20 min: work on homework

• Complete all exercises of §3.3
• Study glossary list §3.3 on StudyGo

What force is labeled with the letter "A"?

1) Does the cyclist move forwards or backwards?
2) What is the resultant force?
(Give answer with unit)

HW CHECK

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

• Stay seated
• Stay quiet

GET READY

• Close your laptop and put it in your bag. 
• Close your textbook 
• Grab a pencil and a ruler/geometric triangle

Showing forces

We use arrows to show two things about the force:

The direction = the direction the arrow points at

The size = the length of the arrow

Also important: 

Starting point of the arrow

Drawing forces

• Make the worksheet drawing forces
• Make the questions ALONE

• Do not use your laptop!

Are you stuck?: 

• Check your textbook
• Ask the person next to you (WHISPERING ONLY!)
• Ask your teacher

Short break

• Do not move from your seat
• Keep your volume down 

GET READY

• Close your laptop and put it in your bag
• Open your notebook 
• Grab a pen or pencil (to make notes) 

§3.3 SPEED

§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

§3.3 SPEED

KEY WORDS:

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

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)

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.

Calculating speed

To calculate speed two 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)

How to calculate with a formula?

FICA:

Formula

Information

Calculation

Answer

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.
• Use FICA 

Example question answer

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)

• F:   speed = distance / time
• I:    8 km and 15 min
• C:  speed = meter / seconds
•       8 km --> meter                      8 x 1000 = 8000 meter
•       15 min --> seconds             15 x 60 = 900 seconds
•       8000m / 900s = 8.89 m/s
• A:  8.89 m/s

Homework:

• Complete all exercises of §3.3
• Study glossary list §3.3 on StudyGo

And if you did not do so yet for tomorrow:

• Prepare skills assessment speed: 

       first section: measuring and calculation