Children's book Author & Illustrator

Hyewon Yum

Biography

Hyewon Yum is the author and illustrator of several acclaimed books for children, including Mom, It’s My First Day of Kindergarten!, which earned her the Ezra Jack Keats New Illustrator Award. She is also the illustrator of A Piece of Home, written by Jeri Watts. Hyewon Yum lives with her family in Brooklyn, New York.

A Spoonful of the Sea
Not Perfect
Night Song
Sometimes I Kaploom
Sometimes I Grumblesquinch
Luli and the Language of Tea
Not Little
Grandpa Across the Ocean
The Happiness of a Dog with a Ball in Its Mouth
I Am a Bird
Lion Needs a Haircut
Clever Little Witch
The latest

Hyewon's most recent book

A Spoonful of the Sea
Sale price
$1797
Picture Book · Ages 4–8 · September 9, 2025

A Spoonful of the Sea

By Hyewon Yum

A birthday soup reveals a tradition linking mothers, daughters, and the sea.

32 pages
4.3/5 Goodreads · 184 ratings
$18.99Save 5%
Hardcover
Reader favorites

Most Popular Hyewon Yum Books

Luli and the Language of Tea

Picture Book · Ages 3–7 · 2022

A tea party unites children who speak different languages.

Not Perfect

Picture Book · Ages 4–8 · 2024

Dot struggles to create the perfect poster for her admired friend. Can she embrace imperfection?

A Spoonful of the Sea

Picture Book · Ages 4–8 · 2025

A birthday soup reveals a tradition linking mothers, daughters, and the sea.

Saturday Is Swimming Day

Picture Book · Ages 4–6 · 2018

A girl faces her fear of swimming, finding courage and patience along the way.

Sometimes I Kaploom
#5 in Series
Sale price
$1797

Sometimes I Kaploom

Picture Book · Ages 4–8 · 2023

A child struggles with bravery and fear during emotional goodbyes.

The Twins' Blanket

Picture Book · Ages 3–6 · 2011

Twins struggle to learn independence as they outgrow sharing a single blanket.

At a glance

Book Stats

7

Authored

17

Illustrated

10

Collaborators

Picture books

18

Chapter books

1

Publishing timeline

Books published each year, stacked by book type.

Book mix

The share of the catalog represented by each book type.

Complete bibliography

All Hyewon Yum Books

Every title in the Bookroo library, ordered from newest to oldest.

A Spoonful of the Sea
Sale price
$1797

A Spoonful of the Sea

Picture Book · Ages 4–8 · 2025

A birthday soup reveals a tradition linking mothers, daughters, and the sea.

Not Perfect
Sale price
$1797

Not Perfect

Picture Book · Ages 4–8 · 2024

Dot struggles to create the perfect poster for her admired friend. Can she embrace imperfection?

Night Song

Chapter Book · Ages 4–8 · 2024

A frog finds his unique voice in the woodland symphony.

Sometimes I Grumblesquinch

Picture Book · Ages 4–8 · 2022

A child struggles with big emotions and the pressure to be perfect, learning it's okay to express them.

Not Little
Sale price
$1797

Not Little

Picture Book · Ages 3–7 · 2021

A small girl stands up to a bully, proving size doesn't define courage.

Grandpa Across the Ocean

Picture Book · Ages 4–8 · 2021

A child discovers unexpected fun with a distant grandparent.

The Happiness of a Dog with a Ball in Its Mouth
Sale price
$1797

The Happiness of a Dog with a Ball in Its Mouth

Picture Book · Ages 4–8 · 2021

Explore happiness through life's contrasts and simple joys.

I Am a Bird

Picture Book · Ages 3–7 · 2021

A girl discovers a surprising connection with a mysterious woman on her daily bike ride.

Lion Needs a Haircut

Picture Book · Ages 3–7 · 2020

A little lion and his dad face their fear of haircuts together. Will they conquer it?

Clever Little Witch

Picture Book · Ages 4–6 · 2019

A witch's spell goes awry when she tries to turn her pesky brother into a goldfish.

Bark in the Park!

Picture Book · 2019

Discover the playful world of dogs through whimsical rhymes in a lively park setting.

Saturday Is Swimming Day
Sale price
$1697

Saturday Is Swimming Day

Picture Book · Ages 4–6 · 2018

A girl faces her fear of swimming, finding courage and patience along the way.

Someday, Narwhal

Picture Book · Ages 4–8 · 2017

A tiny narwhal dreams of adventure beyond her fishbowl with the help of friends.

A Piece of Home

Picture Book · Ages 5–8 · 2016

A boy finds connection in a new land through a familiar flower.

Puddle

Picture Book · Ages 4–7 · 2016

A rainy day sparks an imaginative adventure indoors.

Mom, It's My First Day of Kindergarten!

Picture Book · Ages 4–7 · 2012

A child reassures his anxious mother on his first day of kindergarten.

The Twins' Blanket
Sale price
$1899

The Twins' Blanket

Picture Book · Ages 3–6 · 2011

Twins struggle to learn independence as they outgrow sharing a single blanket.

Creative company

Collaborators

The authors and illustrators who share the credits across Hyewon Yum's books.

01

Maya Myers

Author / 2 shared books

Bookroo

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