Vivi Loves Science: Sink or Float (I Can Read Level 3)

Vivi Loves Science: Sink or Float (I Can Read Level 3)
Co-Authors / Illustrators
Age Range
Release Date
February 15, 2022
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Vivi loves science! In this STEM-themed Level 3 I Can Read! title, Vivi and her friends visit the aquarium and are introduced to the concepts of density and buoyancy. A great choice for aspiring scientists, emerging readers, and fans of Andrea Beaty’s Ada Twist, Scientist. Includes activities, a glossary, and a fun experiment to do at home. 
Vivi loves science—and experimenting! In this Level 3 I Can Read! title, Vivi and her classmates visit an aquarium and learn about the creatures living in the big display tank. But why do some fish swim while others bury themselves in the sand? Vivi will have to experiment to find out!

The Loves Science books introduce readers to girls who love science, as well as basic concepts of science, technology, engineering, and math. This Level 3 I Can Read! explores swimming, sinking, floating, and density, and includes an experiment to try at home. A great pick for newly independent readers and an ideal companion to Cece Loves Science: Push and Pull and Libby Loves Science: Mix and Measure

Editor review

1 review
Fun story complete with activity
Overall rating
Writing Style
Illustrations/Photos (if applicable)
In this second book in a series, Vivi and her class visit an aquarium with their teacher, Ms. Cousteau.Since Vivi loves marine biology, she is very excited. The children get to touch a stingray, see sea turtles, and learn about the habits of flatfish. The scientist at the aquarium teaches them about the swim bladder in the flatfish, and shows them how to make their own out of a balloon and bottle. The concept of low density and high density is explained and demonstrated so that the children understand how the flatfish is able to stay on the bottom of the tank. Vivi gets to ask more questions, and is happy to go home and tell her goldfish, Bubbles, what she has learned. Instructions for recreating the swim bladder experiment are included at the end of the book.
Good Points
Vivi's love for science is great to see, and there are a number of other books in this I Can Read series, some involving Vivi, and some with Cece and Libby as main characters. STEM related books are in great demand, and are a good way to encourage children, especially girls, to investigate different areas of science. I was surprised at how very detailed the information about the swim bladder was, but it was also well explained and easy to understand for early elementary school readers. The pictures and examples help visually represent the concept well. The spacing of the text and pictures is particularly helpful, with shorter lines of text located directly under the picture of the concept being explained, instead of in one clump at the bottom of the page.

The illustrations are brightly colored and appealing, with lots of blue for the water, but with bright pops of yellow in Vivi's clothing and various fish. Ms. Cousteau and the scientist are women of color, and Vivi and her classmates represent a variety of ethnicities, although there is nothing in the text that specifically states any cultural connections.

If my land locked middle grade readers are any indication, marine biology is fascinating to a lot of children, and emerging independent readers will enjoy tagging along on Vivi's field trip. Pair this was books like Mihaly's Water: A Deep Dive of Discovery, Lawler's Oceans of Love, and National Geographic Kid's Ultimate Ocean-Pedia, but be prepared to make a swim bladder out of a ballon and a small glass bottle. It's the plastic tubing that you'll need to find in advance, since I know I don't have any lying around the house!
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