Lesson 3 — §4.2 Taking accurate measurements

• Natuurkunde / Scheikunde
• Middelbare school
• havo
• Leerjaar 1

Lessonplan

Lesson plan

Opening — 5 min

Class phase — 15 mim

- recap — lightning round

- measuring time class demonstration (let ball fall while standing 

on chair everyone measures — discuss, what is the actual

 fall time? how do we determine that?)

- Accuracy and precision

Solo phase  — 20 min

-  Read Reaction time & measuring time precisely

- Yellow block exercises §4.2

Closing — 10 min

- Explain Reaction time & measuring time precisely

- what did you learn?

- check goals

- Next lesson + homework

Learning goals

- Discuss accuracy vs precision

- Define reaction time

- Know how to measure time precisely

Lesson plan

• Recap speed
  
• Average speed
  
• Discussing the homework
  
• §4.2 — Precision and Accuracy
  
• Working on exercises
  

Goals

• Explain what is meant by average speed
  
• Calculate average speed in an exercise
  
• Describe the difference between precision and accuracy
  

What did we cover 

previous Lesson?

Exercise

Rachel travelled 240 km in 4 hours by train. 

Then she travelled 120 km in 3 hours by car.

Then 3 km in 1/2 hour by cycle. 

What is the average speed during the whole journey?

The formula for speed

Speed=​time​​distance​​

Average speed

Exercise

Rachel travelled 240 km in 4 hours by train. 

Then she travelled 120 km in 3 hours by car.

Then 3 km in 1/2 hour by cycle. 

What is the average speed during the whole journey?

Discussing the homework

Class Phase

§4.2 — Taking accurate measurements 

Precision vs. accuracy

Exercise

Read §4.2 — precision and accuracy

Explain the difference to each other.

Precision?

accuracy?

Precision

How detailed your measurement is

Accuracy

How correct your measurement is

Precision:

How detailed your measurement is

Accuracy:

How correct your measurement is

Solo Phase

Read 4.2

•  Reaction time
• Measuring time in the laboratory

Do 4.2

Yellow block exercises

Goals

• Explain what is meant by average speed
  
• Calculate average speed in an exercise
  
• Describe the difference between precision and accuracy
  

Next lesson

Homework

Read: Textbook §4.2

Do: Yellow block exercises  §4.2