Science

Force and pressure

An AR classroom game for Grade 5. Learners can aim with their hands at the camera or play by tapping the screen.

This set has 6 questions in an interactive multiple choice activity.

Curriculum indicatorว 2.2 ป.5/1

Play Host a classroom

A look before you play

Sample questions

A few real prompts from the game to help you choose an activity for your class.

01
What is pressure?
- force per unit area
- force times time
- force times distance
Read the explanation
Pressure is the force acting on one unit of area.
02
Why does a sharp knife cut more easily?
- a sharp knife is heavier than a blunt one
- a small contact area gives high pressure
- a sharp knife has more force inside it
Read the explanation
A sharp edge touches a smaller area, so the same force gives more pressure.
03
Why does a lorry have so many wheels?
- more wheels make the truck go faster
- to make the truck lighter when loaded
- to spread the weight and lower pressure on the road
Read the explanation
They spread the weight over a larger area, lowering the pressure on the road.

Before you play

Game teaching guide

What children will practise

Pressure and upthrust: pressure as force per area, sharp knives, lorries with many wheels, water pressure with depth, upthrust, and why a steel ship floats. In the 2560 curriculum this is lower-secondary content, not the tagged ว 2.2 ป.5/1 (resultant of forces in one line).

What's in the worksheet

6 questions, multiple choice with three options each - Pressure is force per unit area - A sharp knife cuts easily because a small contact area gives high pressure - A lorry has many wheels to spread the weight and lower pressure on the road - Water pressure increases with depth; a steel ship floats because its overall density is less than water

How to use it in class

Suits a class that has done forces and is ready to go further, about 6 minutes in teams. For questions 2 and 3, press modelling clay with a pencil tip and with the flat of an eraser using the same force and compare the marks. For question 4, pierce a water bottle at three heights and see that the lowest jet goes furthest. For question 6, float clay as a ball and as a boat. You can link it to a class and record it in the gradebook.

Common sticking points

- Question 6: choosing the steel is lighter than water, thinking a floating ship means a light material. Shape clay into a boat to show same material, different shape. - Question 3: choosing more wheels make it faster, linking wheels with speed. Compare tyre marks in soft soil with a high-heel print. - Question 1: confused by options using times, which they have not met. Write pressure = force ÷ area on the board before playing.