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Description
Know Yourself: Dr. Bonyfide Book 3 Bones of the Rib Cage and SpineFINALLY, A HUMAN ANATOMY BOOK THAT YOUR KIDS WILL LOVE! This award winning workbook does far more than teach your child about the skeletal system. Bones of the Rib Cage and Spine contains a wide array of activities including crossword puzzles, mazes, and more. This exciting workbook doesn't feel like work at all and is bursting with fun! This exploration of the bones of the rib cage and spine is guided by our family of Know Yourself characters
FINALLY, A HUMAN ANATOMY BOOK THAT YOUR KIDS WILL LOVE!This award-winning workbook does far more than teach your child about the skeletal system.
Bones of the Rib Cage and Spine contains a wide array of activities including crossword puzzles, mazes, and more. This exciting workbook doesn't feel like work at all and is bursting with fun!
This exploration of the bones of the rib cage and spine is guided by our family of Know Yourself characters including Dr. Bonyfide, Pinky Le Darpals, and their friends. They help the reader develop a lifelong love for science and an appreciation for one's body, while beginning the discovery of who they are meant to be in this world.
Recommended Ages: For independent learning, we recommend ages 8-12. However, these workbooks are suitable for all ages, including parents too!
This product includes:
Bones of the Rib Cage and Spine: Book 3
119 pages of skeletal knowledge, puzzles, fun, and games!
Know Yourself engages young minds in understanding anatomy, physiology, and psychology. This book sets a foundation for discovering how the body functions, building confidence, and making healthy decisions for yourself. Our pedagogical approach includes a variety of learning modalities, spiral curriculum design, and culturally responsive and representative content.
Know Yourself has had the great fortune of working with a team of parents, educators, writers, doctors, scientists, artists, researchers and filmmakers in creating this original, educational, award-winning content. The list of contributors who have helped realize this vision is long and illustrious. We thank them all for their time, their passion, and their expertise in helping make Know Yourself a reality. We have only just begun!
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4.6 ★★★★★
Based on 2333 reviews
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Product Reviews
★★★★★ 5
Good for night sessions
Size: Medium, Pattern Name: Pack of 1
Picked this up for evening fetch sessions and it’s been a win. It charges up fast, couple minutes under a lamp or in sunlight and it’s good to go, and the glow is genuinely bright, not the sad dim purple some of these put out. Makes it way easier to find in the yard at dusk, and the dog can actually track it.
It’s a little on the softer side compared to a regular tennis ball, but durable enough to hold up to my big dog, who is not gentle with toys. Still kicking after plenty of chomping and slobber. Fits a standard Chuckit! launcher perfectly, which is the whole point.
Pros:
• Glows brightly and clearly in the dark
• Charges fast from any light source
• Holds up well even with a big, enthusiastic chewer
• Fits standard ball-throwing sticks
• Great for evening or early-morning fetch
Cons:
• A bit softer than a regular tennis ball — a determined power-chewer could probably destroy it eventually
• Glow fades after a while, so you’ll need to recharge it during long sessions
• Only glows if it’s been charged, which is obvious but easy to forget
Tips:
• Charge it under a bright light or in the sun for a few minutes before heading out
• A flashlight works in a pinch if you forgot to charge it
• Keep it out of permanent fetch duty — rotate with a regular ball so it lasts longer
• Not a chew toy, even though it’s tempting to leave it with the dog
Five stars. If you’ve got a dog and a yard, this makes evening fetch actually doable.
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Westies Fav
Size: Small, Pattern Name: Pack of 1
Best Westie ball ever, my dog loves this ball. Exactly her size! 3" tennis balls are too big & she rips the fur off. this silicone-ish ball has no fur & is 2&1/2 "
We have 2" balls from her electronic ball laucher, but she still loves this glow in the dark best!
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Reviewed in the United States on May 4, 2026
★★★★★ 5
Best dog ball in the world!
Size: Large, Pattern Name: Pack of 1, Size: Large, Pattern Name: Pack of 1
My dog is singularly obsessed with playing ball. He would drop a steak to chase a ball. (He'd return to the steak, but not without the retrieved ball. He's not an idiot.) He makes dangerous leaps, crashes into trees, and runs fast enough to catch thrown balls before they even hit the ground. Since he doesn't care about his own wellbeing, it's my job to protect him as much as I can. And a lot of balls are hard enough to cause him pain or dental damage when he mistimes a catch. Enter the ChuckIt Glow Ball!
The minute Cowboy got his first Glow Ball, he no longer had any interest in the dozens of tennis balls scattered around the house and yard. If I took the Glow Ball away and instead threw a tennis ball, Cowboy would run to retrieve the ball, then return without it and begin looking all over the house for the Glow Ball. The Glow Ball is tough enough to survive Cowboy's big, sharp chompers, yet it's soft enough to do no harm when it hits him in the face. The glow feature is a huge bonus, too. Cowboy gets distracted by chipmunks and squirrels when we're playing, so he sometimes can't remember where he dropped the ball to pursue the interloper. If the ball was exposed to enough light before it was misplaced, it will be easy to find once the sun goes down. (Otherwise, Cowboy always finds it eventually.) When I'm feeling nocturnal, I'll put the ball under a light for a few minutes to activate the electrons, then treat my boy to a middle-of-the-night game of fetch.
I was so happy to see these on sale, I bought a lifetime supply for my pantry. The size guide seems accurate. ChuckIt recommended the large size for a dog of Cowboy's weight and that size is perfect. Highly recommended product.
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Reviewed in the United States on October 14, 2024
★★★★★ 5
Durable , dogs love them !
Size: 2 Count (Pack of 1), Style: Pack of 2, Size: 2 Count (Pack of 1), Style: Pack of 2
These chuck it balls are a fan favorite of my own dogs and my foster pups . So much so I have sent my foster home with them when they go to their new families! I seriously need an endless supply !
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Whistles when thrown
Size: 2 Count (Pack of 1), Style: Pack of 2
One of my shepherd’s favorites! Truly does whistle when you throw it! Good quality!
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Reviewed in the United States on May 25, 2026