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cover image of How Heavy?

How Heavy?

Wacky Comparisons (Series)

Mark Weakland Author
Bill Bolton Illustrator
(2020)

cover image of How Heavy?

How Heavy?

Wacky Comparisons (Series)

Mark Weakland Author
Bill Bolton Illustrator
(2019)

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 Las burbujas flotan, las burbujas explotan/Bubbles Float, Bubbles Pop

Las burbujas flotan, las...

Science Starts (Series)

Mark Weakland Author
(2012)

cover image of Las semillas se plantan, las semillas crecen/Seeds Go, Seeds Grow

Las semillas se plantan, las...

Science Starts (Series)

Mark Weakland Author
(2012)

cover image of Los engranajes trabajan, las ruedas ruedan/Gears Go, Wheels Roll

Los engranajes trabajan, las...

Science Starts (Series)

Mark Weakland Author
(2012)

cover image of Los imanes atraen, los imanes repelen/Magnets Push, Magnets Pull

Los imanes atraen, los imanes...

Science Starts (Series)

Mark Weakland Author
(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 Tall?

How Tall?

Wacky Comparisons (Series)

Mark Weakland Author
Igor Sinkovec Illustrator
(2013)

cover image of Clang!

Clang!

Wile E. Coyote, Physical Science Genius (Series)

Mark Weakland Author
Loic Billiau Illustrator
(2020)

cover image of Gears Go, Wheels Roll

Gears Go, Wheels Roll

Science Starts (Series)

Mark Weakland Author
(2020)

cover image of Kaboom!

Kaboom!

Wile E. Coyote, Physical Science Genius (Series)

Mark Weakland Author
Loic Billiau Illustrator
(2020)

cover image of On My Way to School

On My Way to School

School Rules (Series)

Mark Weakland Author
Rea Zhai Illustrator
(2020)

cover image of The Adventures of Perseus

The Adventures of Perseus

Ancient Myths (Series)

Mark Weakland Other
Estudio Haus Illustrator
(2020)

cover image of This Is My School

This Is My School

School Rules (Series)

Mark Weakland Author
Nina de Polonia - Nill Illustrator
(2020)

cover image of What Is Light?

What Is Light?

Science Basics (Series)

Mark Weakland Author
(2020)

cover image of What Is Magnetism?

What Is Magnetism?

Science Basics (Series)

Mark Weakland Author
(2020)

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
(2020)

cover image of When Bill Gates Memorized an Encyclopedia

When Bill Gates Memorized an...

Leaders Doing Headstands (Series)

Mark Weakland Author
Jeffrey Ebbeler Illustrator
(2020)

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
(2020)

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
(2020)

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
(2020)

cover image of When Thomas Edison Fed Someone Worms

When Thomas Edison Fed...

Leaders Doing Headstands (Series)

Thomas Radcliffe Illustrator
Mark Weakland Author
(2020)

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
(2020)

cover image of When Wilma Rudolph Played Basketball

When Wilma Rudolph Played...

Leaders Doing Headstands (Series)

Daniel Duncan Illustrator
Mark Weakland Author
(2020)

cover image of Whoosh!

Whoosh!

Wile E. Coyote, Physical Science Genius (Series)

Mark Weakland Author
Alan Brown Illustrator
(2020)

cover image of Who's Who at School

Who's Who at School

School Rules (Series)

Mark Weakland Author
Nina de Polonia - Nill Illustrator
(2020)

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
(2020)

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
(2020)

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
(2020)

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
(2020)

cover image of Zoom!

Zoom!

Wile E. Coyote, Physical Science Genius (Series)

Mark Weakland Author
Paco Sordo Illustrator
(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)

cover image of Gut Bugs, Dust Mites, and Other Microorganisms You Can't Live Without

Gut Bugs, Dust Mites, and...

Nasty (but Useful!) Science (Series)

Mark Weakland Author
(2021)

cover image of Gut Bugs, Dust Mites, and Other Microorganisms You Can't Live Without

Gut Bugs, Dust Mites, and...

Nasty (but Useful!) Science (Series)

Mark Weakland Author
(2021)

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
(2021)

cover image of Pucks, Clubs, and Baseball Gloves

Pucks, Clubs, and Baseball...

Poet in You (Series)

Catherine Ipcizade Author
Blake Hoena Author
(2021)

cover image of The Solid Truth about Matter

The Solid Truth about Matter

LOL Physical Science (Series)

Mark Weakland Author
Bernice Lum Illustrator
(2021)

cover image of Zombies and Forces and Motion

Zombies and Forces and Motion

Monster Science (Series)

Mark Weakland Author
Gervasio Flocco Illustrator
(2021)

cover image of Zombies and Electricity

Zombies and Electricity

Monster Science (Series)

Mark Weakland Author
Diego Coglitore Illustrator
(2021)

cover image of Zombies and Forces and Motion

Zombies and Forces and Motion

Monster Science (Series)

Mark Weakland Author
Gervasio Flocco Illustrator
(2021)

cover image of Magnets Push, Magnets Pull

Magnets Push, Magnets Pull

Science Starts (Series)

Mark Weakland Author
(2021)

cover image of Seeds Go, Seeds Grow

Seeds Go, Seeds Grow

Science Starts (Series)

Mark Weakland Author
(2021)

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 Magnets Push, Magnets Pull

Magnets Push, Magnets Pull

Science Starts (Series)

Mark Weakland Author
(2021)

cover image of Seeds Go, Seeds Grow

Seeds Go, Seeds Grow

Science Starts (Series)

Mark Weakland Author
(2021)