Barbara deRubertis – författare

Discover Math Matters! With over 15 million books sold worldwide, this award-winning series of easy-to-read books will help young readers ages 5–8 approach math with enthusiasm. Great for fans of MathStart or Step into Reading Math. It's Collection Week at school and Kate signs up to show a collection - which she doesn't have! Time is running out. What can she do?With engaging stories that connect math to kids’ everyday lives, each book in the Teachers’ Choice Award–winning Math Matters series focuses on a single concept and reinforces math vocabulary and skills. Bonus activities in the back of each book feature math and reading comprehension questions, and even more free activities online add to the fun! (Math topic: Addition)

Discover Math Matters! With over 15 million books sold worldwide, this award-winning series of easy-to-read books will help young readers ages 5–8 approach math with enthusiasm. Great for fans of MathStart or Step into Reading Math. Pablo is excited about helping his grandmother sell vegetables at the farmer's market. But no one stops to buy any. Pablo's solution is clever—and delicious! A recipe is included in this title that's sold over 100,000 copies in the US. With engaging stories that connect math to kids’ everyday lives, each book in the Teachers’ Choice Award–winning Math Matters series focuses on a single concept and reinforces math vocabulary and skills. Bonus activities in the back of each book feature math and reading comprehension questions, and even more free activities online add to the fun! (Math topic: Counting & Skip Counting)

Discover Math Matters! With over 15 million books sold worldwide, this award-winning series of easy-to-read books will help young readers ages 5–8 approach math with enthusiasm. Great for fans of MathStart or Step into Reading Math. Deena has a problem. Her mom's birthday is coming, but she has no money to buy a present! How does a "lucky" penny help Deena?With engaging stories that connect math to kids’ everyday lives, each book in the Teachers’ Choice Award–winning Math Matters series focuses on a single concept and reinforces math vocabulary and skills. Bonus activities in the back of each book feature math and reading comprehension questions, and even more free activities online add to the fun! (Math topic: Money)

Discover Math Matters! With over 15 million books sold worldwide, this award-winning series of easy-to-read books will help young readers ages 5–8 approach math with enthusiasm. Great for fans of MathStart or Step into Reading Math. On a hot summer's day, three children squabble over which ingredients and what quantities should go in their extra special lemonade.With engaging stories that connect math to kids’ everyday lives, each book in the Teachers’ Choice Award–winning Math Matters series focuses on a single concept and reinforces math vocabulary and skills. Bonus activities in the back of each book feature math and reading comprehension questions, and even more free activities online add to the fun! (Math topic: Liquid Measure)

Get to know Alpha Betty’s class in the award-winning, 26-book alphabet series ANIMAL ANTICS A TO Z! From Alexander Anteater to Zachary Zebra, it’s one adventure after another. Zip along with these zany characters as they find new friends, test their talents, and have a rip-roaring good time! Alexander wants to have an amazing act for the talent show. He can already stand on his hands—but can his pals help make his act even more fantastic? This series is a perfect read-aloud choice to help kids discover the joy of letter sounds and give them the phonics building blocks they need for reading success. With delightful illustrations by Paddington Bear illustrator R.W. Alley, ANIMAL ANTICS A TO Z is an excellent resource for parents and educators alike. Activities in each book plus free activities online add to the fun.

Jeremy Jackrabbit is excited to enter the jump rope contest. Will he get the jitters?or will his joyful jumping win him a trip to the Jump Rope Hall of Fame?

Kylie Kangaroo is ready to let her kicker fly at Koora's karate club. There's just one tricky trick—will Kylie ever learn to break a brick?

Oliver Otter loves his little sister and brother. But the twins are always tearing or poking or losing or soaking Oliver’s homework. What will Oliver do about his double dose of trouble?

Quentin Quokka has lots of questions! Quick questions, quiet questions—always more questions! On a string of field trips, Quentin discovers that sometimes it’s good to be quiet . . . and sometimes it’s good to ask questions!

Sammy Skunk’s super sniffer can be super helpful. But when he tries to help the new cook at school, he accidentally stirs up some very soupy trouble!

Tessa Tiger likes to play sports—but NOT when she loses. She stomps and storms until her friends don’t want to play with her anymore. Can Tessa change her attitude and make T-ball fun again—for everyone?

Shiver River, Vampire Cave, Stove-Top Volcano, and a mysterious raven named Nevva Moore. . . . Victor Vicuna is in for some very exciting adventures during his family’s vacation at Verna Aardvark’s Volcano Village!

Xavier Ox loves music. But sometimes his drumming is rather EXPLOSIVE! So Alpha Betty and Xavier's classmates start an exciting experiment to build an extra-strong xylophone—just for Xavier Ox.