Up to My Knees!

by Grace Lin

Published 13 October 2020
Caldecott Honor winner Grace Lin celebrates math for every kid, everywhere!

Mei explores measurement as she plants a sunflower seed and watches it grow. The plant starts off as tall as her toe, but soon it's up to her knees, then her waist, then her shoulders. How tall will it get?

Storytelling Math celebrates children using math in their daily adventures as they play, build, and discover the world around them. Joyful stories and hands-on activities make it easy for kids and their grown-ups to explore everyday math together. Developed in collaboration with math experts at STEM education nonprofit TERC, under a grant from the Heising-Simons Foundation.

The Last Marshmallow

by Grace Lin

Published 13 October 2020
Playing in the winter snow calls for hot cocoa! Explore early math concepts as the friends try to evenly split some tasty marshmallows.

Caldecott Honor winner Grace Lin celebrates math for every kid, everywhere!


After playing in the snow, Olivia and Mei are ready for cocoa. There's one marshmallow for Olivia and one marshmallow for Mei. But what will they do with the third marshmallow? How can two friends share three things fairly?

Storytelling Math celebrates children using math in their daily adventures as they play, build, and discover the world around them. Joyful stories and hands-on activities make it easy for kids and their grown-ups to explore everyday math together. Developed in collaboration with math experts at STEM education nonprofit TERC, under a grant from the Heising-Simons Foundation.

Circle! Sphere!

by Grace Lin

Published 13 October 2020
Caldecott Honor winner Grace Lin celebrates math for every kid, everywhere!

Manny and his friends Olivia and Mei blow bubbles in this playful introduction to geometry. Manny's wand is a circle. Olivia's wand is a square. Mei's wand is a heart. What shape will their bubbles be? (Surprise! They're all spheres.)

Storytelling Math celebrates children using math in their daily adventures as they play, build, and discover the world around them. Joyful stories and hands-on activities make it easy for kids and their grown-ups to explore everyday math together. Developed in collaboration with math experts at STEM education nonprofit TERC, under a grant from the Heising-Simons Foundation.

What Will Fit?

by Grace Lin

Published 13 October 2020
Caldecott Honor winner Grace Lin celebrates math for every kid, everywhere!
A fall-ready favorite for any autumn reading list.


Take a trip to the farmers' market in this playful story about spatial sense. Olivia is searching for something just the right size to fill her basket. The apple is so small that it rolls around. The zucchini is so long that it sticks out. What will fit just right?

Storytelling Math celebrates children using math in their daily adventures as they play, build, and discover the world around them. Joyful stories and hands-on activities make it easy for kids and their grown-ups to explore everyday math together. Developed in collaboration with math experts at STEM education nonprofit TERC, under a grant from the Heising-Simons Foundation.

Now in Spanish bilingual editions--Caldecott Honor winner Grace Lin celebrates math for every kid in this board book series.

Manny and his friends Olivia and Mei blow bubbles in this playful introduction to geometry. Manny's wand is a circle. Olivia's wand is a square. Mei's wand is a heart. What shape will their bubbles be? (Surprise! They're all spheres.)

The Storytelling Math series shows that all children can be mathematical thinkers. Each book includes ideas for exploring math at home with your children, developed in collaboration with math experts at STEM education nonprofit TERC Inc., under a grant from the Heising-Simons Foundation.

Now in Spanish bilingual editions--Caldecott Honor winner Grace Lin celebrates math for every kid in this board book series.
A fall-ready favorite for any autumn reading list.


Take a trip to the farmers market in this playful story about spatial sense. Olivia is searching for something just the right size to fill her basket. The apple is so small that it rolls around. The zucchini is so long that it sticks out. What will fit just right?

The Storytelling Math series shows that all children can be mathematical thinkers. Each book includes ideas for exploring math at home with your children, developed in collaboration with math experts at STEM education nonprofit TERC Inc., under a grant from the Heising-Simons Foundation.

Now in Spanish bilingual editions--Caldecott Honor winner Grace Lin celebrates math for every kid in this board book series.

After playing in the snow, Olivia and Mei are ready for cocoa. There's one marshmallow for Olivia and one marshmallow for Mei. But what will they do with the third marshmallow? How can two friends share three things fairly?

The Storytelling Math series shows that all children can be mathematical thinkers. Each book includes ideas for exploring math at home with your children, developed in collaboration with math experts at STEM education nonprofit TERC Inc., under a grant from the Heising-Simons Foundation.

Now in Spanish bilingual editions--Caldecott Honor winner Grace Lin celebrates math for every kid in this board book series.

Mei explores measurement as she plants a sunflower seed and watches it grow. The plant starts off as tall as her toe, but soon it's up to her knees, then her waist, then her shoulders. How tall will it get?

The Storytelling Math series shows that all children can be mathematical thinkers. Each book includes ideas for exploring math at home with your children, developed in collaboration with math experts at STEM education nonprofit TERC Inc., under a grant from the Heising-Simons Foundation.

A Beautiful House for Birds

by Grace Lin

Published 14 March 2023
Caldecott Honor winner Grace Lin celebrates math for every kid, everywhere!

Olivia wants to make a colorful birdhouse for summer. She starts painting a pattern of stripes on the roof but then oops!—messes up. Now what? Explore patterns in this playful story about creative problem-solving. 

Storytelling Math celebrates children using math in their daily adventures as they play, build, and discover the world around them. Joyful stories and hands-on activities make it easy for kids and their grown-ups to explore everyday math together. Developed in collaboration with math experts at STEM education nonprofit TERC, under a grant from the Heising-Simons Foundation.

Who Jumps More?

by Grace Lin

Published 19 September 2023
Caldecott Honor winner Grace Lin celebrates math for every kid, everywhere!

Olivia and Mei jump in the snow all the way to the tall tree. Mei takes a few big leaps like a deer. Olivia makes lots of smaller hops like a bunny. Each jumps “more” in a different way. A playful exploration of measurement, proportion, and friendship.

Storytelling Math celebrates children using math in their daily adventures as they play, build, and discover the world around them. Joyful stories and hands-on activities make it easy for kids and their grown-ups to explore everyday math together. Developed in collaboration with math experts at STEM education nonprofit TERC, under a grant from the Heising-Simons Foundation.

Our Favorite Apples

by Grace Lin

Published 19 September 2023
Caldecott Honor winner Grace Lin celebrates math for every kid, everywhere.A fall-ready favorite for any autumn reading list.

Manny, Olivia, and Mei go apple picking and sort their red, green, and yellow apples by color. But then they find an apple that’s all three colors. What should they do? A playful exploration of sorting, classifying, and friendship.

Storytelling Math celebrates children using math in their daily adventures as they play, build, and discover the world around them. Joyful stories and hands-on activities make it easy for kids and their grown-ups to explore everyday math together. Developed in collaboration with math experts at STEM education nonprofit TERC, under a grant from the Heising-Simons Foundation.