KEAK AUTHOR

Children’s Activities
Book FOUR

Explore, Learn, and Create with Dr. K!

Join Jennifer and Daniel on their adventures through time while exploring science and fun activities.

Build a Light Clock
Katherine Korkidis Katherine Korkidis

Build a Light Clock

Time feels steady, until you measure it with light. In this hands-on model, children build a simple “light clock” idea using reflections and rhythm to explore why Einstein said motion can change time.

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Make a Spacetime Gravity Well
Katherine Korkidis Katherine Korkidis

Make a Spacetime Gravity Well

Gravity is not just a pull, it can be modeled as a curve. Using a stretched fabric and round objects, students observe how mass changes paths and creates orbits.

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The Coin and Paper Challenge
Katherine Korkidis Katherine Korkidis

The Coin and Paper Challenge

Einstein loved simple experiments that reveal big truths. With a coin, paper, and a glass, students test inertia and learn why objects keep moving unless something stops them.

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The Elevator Thought Experiment Lab
Katherine Korkidis Katherine Korkidis

The Elevator Thought Experiment Lab

What feels like gravity can also feel like motion. Students act out Einstein’s famous elevator idea to explore the equivalence principle using safe movement and careful observation.

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E=mc² Energy Ledger
Katherine Korkidis Katherine Korkidis

E=mc² Energy Ledger

Mass and energy are connected in a surprising way. Students compare everyday energy examples to understand why a little mass can represent an enormous amount of energy.

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Curving Light, A Lens Bending Demo
Katherine Korkidis Katherine Korkidis

Curving Light, A Lens Bending Demo

Light does not always travel in a straight line when the path itself is curved. Using safe lenses and water, students observe bending light and connect it to gravitational lensing.

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Write Your Own Thought Experiment
Katherine Korkidis Katherine Korkidis

Write Your Own Thought Experiment

Einstein solved problems by imagining them clearly. Students create a short “what if” scenario, then explain what they think would happen using evidence and logic.

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