Explains the significant events, traditions, beliefs, and celebrations associated with birthdays.

After celebrating their first nine same-day birthdays together, Amanda and Leo, having fallen out on their tenth and not speaking to each other for the last year, prepare to celebrate their eleventh birthday separately but peculiar things begin to happen as the day of their birthday begins to repeat itself over and over again.

Liz the Whiz & Co. help a neighbor find her way to a birthday party by using their knowledge of place value.

A little boy tries to plan his own surprise birthday party.

A little boy is delighted with his father's gift of a little red car. After a trip around town in his car, a surprise awaits him at home.

Monkey celebrates his mother's birthday.

Stina and her grandfather visit an old sailor on his birthday.

Henry and his big dog Mudge celebrate Henry's birthday with a piñata, a lively birthday party, and a cake shaped like a fish tank, making May first the best day ever.

After a difficult year, Mallory plans a month-long celebration of her ninth birthday in hopes that her next year will be wonderful.

Three stories in one book: In the first story, Danny is surprised and pleased when one of the dinosaurs from the museum agrees to play with him. In the second story, Danny and his friend the dinosaur go to summer camp together. And in the third story, six-year-old Danny invites his dinosaur friend to come to his birthday party.