Walder Science

Weekly STEM Home Learning


Walder Science in dedicated to providing robust STEM resources to help children experience exciting science and math enrichment right from home.  Visit us each week to participate in short, engaging video lessons designed by credentialed educators. Activities are recommended for grades 1 – 6, but can be enjoyed by all ages! Please note that experiments should only be attempted under adult supervision. 

Raffle: Enter our weekly raffle by submitting a picture or a video replicating an experiment or answering the challenge question at the end of a video lesson or the accompanying handout. Earn an additional raffle ticket for every submission, with prizes ranging from gift cards to STEM kits! Click here to submit your raffle entry.

Week of June 28 Weekly Learning Resources

Math Video: Pascal

No-Spill Bottle

Card Challenge

Kraft Stick Kazoo

Week of June 21 Weekly Learning Resources

Math Riddle Perimeter of 14

Capillary Action

Water Bottle on 3 Tongue Depressors

Star Formation

Week of June 14  Weekly Learning Resources

Riddle: Nine Dots

3D Constellation Model

Water Bottle Straw Rocket

Kitchen Science: Ice Cream 

Week of June 7 Weekly Learning Resources

Pull Back Rubber Band

Math Riddle: Ruler off by 1

Juice in Cup Challenge

Learning about Globular Clusters

Week of May 31 Weekly Learning Resources

Riddle: Sticks

Alka-Seltzer Film Canister Rocket


Sun Arc Seasonal Movement Part 2

Paper Bridge Solution

Week of May 24 Weekly Learning Resources

Math Riddle: Buckets

Water Bottle on 3 Tongue Depressors

Mystery of Paper Bridge

Sun Arc Seasonal Movement Part 1

Week of May 10 Weekly Learning Resources

Math Riddle: 12 Squares into Rectangles

Mystery of the Overflowing Cup

Car on Index Card


 Meteoroids, Meteors, and Meteorites

 Week of May 3 Weekly Learning Resources

Math Riddle: Two Dots Triangle

Mystery of the Floating Paperclip

 Spinning a Cup of Water

NGC 2903 Barred Spiral Galaxy

Week of April 26 Weekly Learning Resources

Math Riddle: Circle Intersection

Balance: Mystery of the Dollar

Air Pressure: Suction Cup

Astronomy: The Trifid Nebula

Week of April 19 - Weekly Learning Resources

Math Riddle: Trace Pattern

Mystery of Balance

Earth Day: Mountain Formations

Air Pressure: Blowing a Pom Pom

Week of March 22 - Weekly Learning Resources

Pushing Water with Air Pressure 

Astronomy: Supernovas

Mystery of the Balancing Broom


Riddle: Letter Equations

Week of March 15 - Weekly Learning Resources

Math Riddle: Letters A-D

Air Pressure:Balloon & Alka-Seltzer 

Mystery of the Ball Drop

Sound Waves

Week of March 8 - Weekly Learning Resources

Mystery of the Tempurature Drop

Air Pressure Squeeze



Math Riddle: Pattern

Astronomy: Water on the Moon

Water on the Moon Handout

Week of March 1, 2021 - Weekly Learning Resources

Heat Transfer with Ice

Riddle: Guess Four

Circular Motion: Spinning Cup

Astronomy: Moon Movements

Week of February 22, 2021 -  Weekly Learning Resources

Air Pressure: Crushed Soda Can 

Challenge Questions

Math Riddle: Four Friends

Astronomy: Spiral Galaxies

Handout and a Challenge Question

Soap Power

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