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cover image of Captain Kidd's Crew Experiments with Sinking and Floating

Captain Kidd's Crew...

In the Science Lab (Series)

Mark Weakland Author
Troy Cummings Illustrator
(2021)

cover image of DO-4U the Robot Experiences Forces and Motion

DO-4U the Robot Experiences...

In the Science Lab (Series)

Mark Weakland Author
Michael Moran Illustrator
(2012)

cover image of The Lonely Existence of Asteroids and Comets

The Lonely Existence of...

Adventures in Science (Series)

Mark Weakland Author
Carlos Aón Illustrator
(2020)

cover image of How Heavy?

How Heavy?

Wacky Comparisons (Series)

Mark Weakland Author
Bill Bolton Illustrator
(2019)

cover image of How Tall?

How Tall?

Wacky Comparisons (Series)

Mark Weakland Author
Igor Sinkovec Illustrator
(2013)

cover image of Fast, Strong, Fearless

Fast, Strong, Fearless

Football Words (Series)

Mark Weakland Author
(2015)

cover image of Fred Flintstone's Adventures with Inclined Planes

Fred Flintstone's Adventures...

Flintstones Explain Simple Machines (Series)

Mark Weakland Author
Alan Brown Illustrator
(2016)

cover image of Fred Flintstone's Adventures with Levers

Fred Flintstone's Adventures...

Flintstones Explain Simple Machines (Series)

Mark Weakland Author
Christian Cornia Illustrator
(2016)

cover image of Fred Flintstone's Adventures with Pulleys

Fred Flintstone's Adventures...

Flintstones Explain Simple Machines (Series)

Mark Weakland Author
Paco Sordo Illustrator
(2016)

cover image of Fred Flintstone's Adventures with Screws

Fred Flintstone's Adventures...

Flintstones Explain Simple Machines (Series)

Mark Weakland Author
Loic Billiau Illustrator
(2016)

cover image of Fred Flintstone's Adventures with Wedges

Fred Flintstone's Adventures...

Flintstones Explain Simple Machines (Series)

Mark Weakland Author
Christian Cornia Illustrator
(2016)

cover image of Fred Flintstone's Adventures with Wheels and Axles

Fred Flintstone's Adventures...

Flintstones Explain Simple Machines (Series)

Mark Weakland Author
Alan Brown Illustrator
(2016)

cover image of Hockey Counting

Hockey Counting

SI Kids Rookie Books (Series)

Mark Weakland Author
(2014)

cover image of Hockey Patterns

Hockey Patterns

SI Kids Rookie Books (Series)

Mark Weakland Author
(2014)

cover image of Hockey Shapes

Hockey Shapes

SI Kids Rookie Books (Series)

Mark Weakland Author
(2014)

cover image of Kaboom!

Kaboom!

Wile E. Coyote, Physical Science Genius (Series)

Mark Weakland Author
Loic Billiau Illustrator
(2017)

cover image of On My Way to School

On My Way to School

School Rules (Series)

Mark Weakland Author
Rea Zhai Illustrator
(2019)

cover image of Pass, Catch, Tackle

Pass, Catch, Tackle

Football Words (Series)

Mark Weakland Author
(2015)

cover image of Scooby-Doo! and the Buried City of Pompeii

Scooby-Doo! and the Buried...

Unearthing Ancient Civilizations with Scooby-Doo! (Series)

Mark Weakland Author
Christian Cornia Illustrator
(2018)

cover image of Scooby-Doo! and the Cliff Dwellings of Mesa Verde

Scooby-Doo! and the Cliff...

Unearthing Ancient Civilizations with Scooby-Doo! (Series)

Mark Weakland Author
Christian Cornia Illustrator
(2018)

cover image of Scooby-Doo! and the Pyramids of Giza

Scooby-Doo! and the Pyramids...

Unearthing Ancient Civilizations with Scooby-Doo! (Series)

Mark Weakland Author
Dario Brizuela Illustrator
(2018)

cover image of Scooby-Doo! and the Ruins of Machu Picchu

Scooby-Doo! and the Ruins of...

Unearthing Ancient Civilizations with Scooby-Doo! (Series)

Mark Weakland Author
Dario Brizuela Illustrator
(2018)

cover image of Stadium, Jersey, Player

Stadium, Jersey, Player

Football Words (Series)

Mark Weakland Author
(2015)

cover image of The Adventures of Perseus

The Adventures of Perseus

Ancient Myths (Series)

Mark Weakland Other
Estudio Haus Illustrator
(2015)

cover image of The Solid Truth about Matter

The Solid Truth about Matter

LOL Physical Science (Series)

Mark Weakland Author
Bernice Lum Illustrator
(2012)

cover image of This Is My School

This Is My School

School Rules (Series)

Mark Weakland Author
Nina de Polonia - Nill Illustrator
(2019)

cover image of What Is Light?

What Is Light?

Science Basics (Series)

Mark Weakland Author
(2019)

cover image of What Is Magnetism?

What Is Magnetism?

Science Basics (Series)

Mark Weakland Author
(2019)

cover image of When Amelia Earhart Built a Roller Coaster

When Amelia Earhart Built a...

Leaders Doing Headstands (Series)

Mark Weakland Author
Oksana Grivina Illustrator
(2016)

cover image of When Bill Gates Memorized an Encyclopedia

When Bill Gates Memorized an...

Leaders Doing Headstands (Series)

Mark Weakland Author
Jeffrey Ebbeler Illustrator
(2018)

cover image of When Eleanor Roosevelt Learned to Jump a Horse

When Eleanor Roosevelt...

Leaders Doing Headstands (Series)

Mark Weakland Author
John Joseph Illustrator
(2019)

cover image of When Martin Luther King Jr. Wore Roller Skates

When Martin Luther King Jr....

Leaders Doing Headstands (Series)

Mark Weakland Author
Patrick Ballesteros Illustrator
(2016)

cover image of When Neil Armstrong Built a Wind Tunnel

When Neil Armstrong Built a...

Leaders Doing Headstands (Series)

Mark Weakland Author
Luciano Lozano Illustrator
(2017)

cover image of When Ruth Bader Ginsburg Chewed 100 Sticks of Gum

When Ruth Bader Ginsburg...

Leaders Doing Headstands (Series)

Mark Weakland Author
Daniela Volpari Illustrator
(2018)

cover image of When Thomas Edison Fed Someone Worms

When Thomas Edison Fed...

Leaders Doing Headstands (Series)

Thomas Radcliffe Illustrator
Mark Weakland Author
(2016)

cover image of When Walt Disney Rode a Pig

When Walt Disney Rode a Pig

Leaders Doing Headstands (Series)

Mark Weakland Author
Pablo Pino Illustrator
(2017)

cover image of When Wilma Rudolph Played Basketball

When Wilma Rudolph Played...

Leaders Doing Headstands (Series)

Daniel Duncan Illustrator
Mark Weakland Author
(2016)

cover image of Whoosh!

Whoosh!

Wile E. Coyote, Physical Science Genius (Series)

Mark Weakland Author
Alan Brown Illustrator
(2017)

cover image of Whoosh, Crunch, Roar

Whoosh, Crunch, Roar

Football Words (Series)

Mark Weakland Author
(2015)

cover image of Who's Who at School

Who's Who at School

School Rules (Series)

Mark Weakland Author
Nina de Polonia - Nill Illustrator
(2019)

cover image of Yogi Bear's Guide to Animal Tracks

Yogi Bear's Guide to Animal...

Yogi Bear's Guide to the Great Outdoors (Series)

Mark Weakland Author
Christian Cornia Illustrator
(2015)

cover image of Yogi Bear's Guide to Bugs

Yogi Bear's Guide to Bugs

Yogi Bear's Guide to the Great Outdoors (Series)

Mark Weakland Author
Bryan David Beach Illustrator
(2015)

cover image of Yogi Bear's Guide to Plants

Yogi Bear's Guide to Plants

Yogi Bear's Guide to the Great Outdoors (Series)

Mark Weakland Author
Christian Cornia Illustrator
(2015)

cover image of Yogi Bear's Guide to Rocks

Yogi Bear's Guide to Rocks

Yogi Bear's Guide to the Great Outdoors (Series)

Mark Weakland Author
Bryan David Beach Illustrator
(2015)

cover image of Zombies and Electricity

Zombies and Electricity

Monster Science (Series)

Mark Weakland Author
Diego Coglitore Illustrator
(2013)

cover image of Zoom!

Zoom!

Wile E. Coyote, Physical Science Genius (Series)

Mark Weakland Author
Paco Sordo Illustrator
(2017)

cover image of How Does Wi-Fi Work?

How Does Wi-Fi Work?

High Tech Science at Home (Series)

Mark Weakland Author
(2020)

cover image of The Lonely Existence of Asteroids and Comets

The Lonely Existence of...

Adventures in Science (Series)

Mark Weakland Author
Carlos Aón Illustrator
(2012)