Mark Weakland

How Tall?: Wacky Ways to Compare Height

Mark Weakland

$9.03 - $51.49

How Heavy?

Mark Weakland

$9.49 - $9.99

Thud!: Wile E. Coyote Experiments with Forces and Motion

Mark Weakland

$5.29 - $23.30

Smash!: Wile E. Coyote Experiments with Simple Machines

Mark Weakland

$5.09 - $23.30

Zoom!: Wile E. Coyote Experiments with Speed and Velocity

Mark Weakland

$5.79 - $23.30

Whoosh!: Wile E. Coyote Experiments with Flight and Gravity

Mark Weakland

$6.09 - $23.30

The Solid Truth about Matter

Mark Weakland

$14.59 - $14.99

Captain Kidd's Crew Experiments with Sinking and Floating (In the Science Lab)

Mark Weakland

$5.59 - $20.86

When Amelia Earhart Built a Roller Coaster

Mark Weakland

$5.79 - $21.67

Wile E. Coyote's Physical Science for Super Geniuses in Training

Mark Weakland

$11.29 - $12.09

Football ABC (SI Kids Rookie Books)

Mark Weakland

$5.09 - $7.78

When Martin Luther King Jr. Wore Roller Skates

Mark Weakland

$6.59 - $21.67

Clang!

Mark Weakland

$23.30 - $55.99

Football Colors (SI Kids Rookie Books)

Mark Weakland

$4.89 - $6.09

Kaboom!: Wile E. Coyote Experiments with Chemical Reactions

Mark Weakland

$23.30 - $62.69

Zombies and Forces and Motion

Mark Weakland

$8.41 - $11.19

Scooby-Doo! an Addition Mystery: The Case of the Angry Adder

Mark Weakland

$7.59 - $21.67

Football Opposites

Mark Weakland

$5.79 - $21.30

When Neil Armstrong Built a Wind Tunnel

Mark Weakland

$4.89 - $21.67

Seeds Go, Seeds Grow

Mark Weakland

$5.69 - $9.99

When Ruth Bader Ginsburg Chewed 100 Sticks of Gum

Mark Weakland

$6.89 - $21.67

Hockey Shapes (SI Kids Rookie Books)

Mark Weakland

$4.69 - $6.39

Scooby-Doo! a Subtraction Mystery: The Case of the Disappearing Doughnuts

Mark Weakland

$17.19 - $21.67

Fred Flintstone's Adventures with Wheels and Axles

Mark Weakland

$12.79 - $21.49

When Walt Disney Rode a Pig

Mark Weakland

$4.89 - $21.67

Yogi Bear's Guide to Animal Tracks

Mark Weakland

$21.67

When Thomas Edison Fed Someone Worms

Mark Weakland

$9.03 - $13.29

Scooby-Doo! and the Truth Behind Vampires

Mark Weakland

$11.59 - $20.45

When Eleanor Roosevelt Learned to Jump a Horse

Mark Weakland

$9.03 - $21.67

Scooby-Doo! Unmasks Monsters: The Truth Behind Zombies, Werewolves, and Other Spooky Creatures

Mark Weakland

$7.49 - $9.00