Puzzles · Level 4

Science Puzzles

Science puzzles focused on foundational mechanics, chemistry, and biology. Do one puzzle a day for a month!

Who Gets Their Tea Cooler?

Redesign This Gravity Ring

Which One's the Heaviest?

What Happens to the Gaps?

Share the Volts

Where Is the Reaction Force the Greatest?

How Do the Trade Winds Flow?

Will It Sink or Float?

What Happens on the Right?

Let's Lift an Elephant

Brilliantiums Are Lovely Flowers

Which One Will Be Brighter?

Label This Bimetal Thermometer

Keep It Balanced

How Fast Is the New Gear?

Where Is the Earth Best Protected?

Which Elephant Will Fall?

Fuzz and Duke Love Fetch

Is Heat Used or Produced?

Is She Accelerating?

What Will a Voltmeter Read?

Where Does the Energy Go?

What Are the Father's Alleles?

Is It Balanced?

Beware of the Cheese!

You Eat Like a Bird

Can You Free the Nut?

How Fast is the Last Gear?

Make It a Bit Brighter

Fix This Mobile

How Can They Land Safely?

What Does an Atom Weigh?

Can You Loosen the Fit?

Who's the Tug-of-War Winner?

Find the Unknown Weights

Can You Pull Off This Trick?

What Happens in a Faster Flow?

How Much Sulfur Is Needed?

How Fast Can She Fly?

Where Will Lightning NOT Strike?

What's Lost Each Bounce?

Is There Enough Information?

Which Will Run Out First?

How Many Springs Are Needed?

Did Someone Deflate This Football?

Catch Up If You Can!

Let's Make Rocket Fuel

Add Some Spin to It!

How Much Does It Compress?

Cheese or Chocolate?

Which One Will Distort?

Which Counterweight Is Heavier?

Is Your Chemistry a Little Rusty?

The Distance Doesn't Matter

What Happens to the Top Ball?

Where Is There the Most Friction?

Which Feels Colder?

How Much Does It Dip?

This Is Pascal's Paradox


Course description

A one-month puzzle-a-day challenge! Topics include: heat flow, light ray tracing, balancing mobiles, pulleys, electrical circuits, gear mechanisms, kinematics, force diagrams, buoyancy, chemical reactions, genomics, and earth science.

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Puzzles · Level 5

Contest Math

Learn the key techniques and train hard for contest math.

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