## Of magnifying glasses and magnificent ants

Concepts addressed: Thin lenses and their properties, ray tracing.Grade level: 11th Scenario:Last week it was I got a present from my aunt: a magnifying glass. She said it would be “really cool” if I used it to “watch ants carrying their food” – her words, not mine.After inspecting the present, I noticed that it is […]

## Studying makes you richer? (Advanced)

Concepts addressed: Linear regression, critical analysisGrade level: 9th – 10th Scenario: In the age of startups and self-made influencers, you might wonder what is the point in studying any higher than high school. We keep hearing that education increases our chances for a better job, but is it true? The table below shows the number

## Treasure in the pond

Concepts addressed: refraction, geometric and trigonometric analysis Grade level: 10th. Scenario: A week ago, while walking through the park, I stood by the pond as I always do. While looking down at the water, I noticed something shiny – a golden coin! From where I stood, it seemed to be 1.50 m meters from the

## Car Jump (basic)

Concepts addressed: Projectile motion skills Grade level: 11th. An Advanced version of Car Jump is also available. Scenario: A Hollywood production has called you in as a physics expert. They are filming the latest Marvel movie and they need a shot of a car flying off a ramp and landing safely on the ground. To

Concepts addressed: Projectile motionGrade level: 12th.An easier version of Car Jump is also available. Scenario:A Hollywood production has called you in as a physics expert. They are filming the latest Marvel movie and they need a shot of a car flying off a ramp and landing safely on the ground. To do this they use

## Saving Money with electricity (advanced)

Concepts addressed: Ohm’s law, electrical power, unit conversionGrade level: 11th.An easier version of Saving Money with electricity is also available. Scenario: My TV, fridge, and freezer are all right next to an electrical outlet, yet they all came with a 1.5m long cable to plug them in. Since they are all plugged in 24/7, I

## Saving money with electricity (basic)

Concepts addressed: electrical power and analytical skills.Grade level: 8th.An advanced version of Saving Money with electricity is also available. Scenario: I got a gaming computer for my birthday and I use it to play Fortnite with my friends. When I go to sleep I leave it on, but it’s not doing anything (idle). Assuming I

## How fast does a light bulb turn on?

Concepts addressed: velocity in an electric field, electrical power, and analytical skills.Grade level: 11th Scenario: When a light switch is off, the electric circuit inside the wall of your house is interrupted, so neither an electric field nor electrons can flow through it. The moment you flip the switch on you close the circuit, meaning