Math is boring. Or is it? In the super-cute and fun Albert Adds Up!, kids can get a realistic math lesson neatly layered within an engaging story.

Albert Adds Up! starts with Albert’s sister Wanda returning from the library with a book Albert wants to read. Albert immediately starts offering his toys to Wanda to trade in exchange for reading it first, adding more and more items to his trade pile. Several pages include illustrations with pictures and numbers that show how big Albert’s trade pile is growing so kids can correlate the number of toys with the actual numbers. Eventually, Wanda insists Albert starts taking toys away, and the subtraction starts, until Albert’s trade pile is reduced to zero.
My favorite part of this book was the interaction between Wanda and Albert. As Albert is continually trying to add items to trade to Wanda, she keeps trying to tell him she got the book for him, but gets distracted by the items he’s adding and asking him questions about them in a very cute way. Her distraction enables Albert to continue adding items to his trade pile, because he thinks “it’s not enough” for her to let him read the book first. I don’t like to use the term organic because for a while it got very over-used, but because of the sibling’s interactions, his trade pile is able to grow in a very organic way, allowing the math concepts to continue through the story.
I also have to give incredible kudos to the author and illustrator. They were able to create realistic and likeable characters that you could really understand in a math story! It’s so impressive. And, on top of the math lesson, there’s also a hidden lesson in the story about not interrupting and letting someone finish what they’re saying. Genius!
I will definitely be checking out more of the Mouse Math series, and I would highly encourage you to do the same!
You can download our lesson plan as a .pdf or read it below. I’ve also included links in the lesson plan to some materials I created for the activities.
Lesson
Albert Adds Up!
Vocabulary
- Addition
- Counting the total of two or more numbers together.
- Subtraction
- Removing one or more numbers from another number.
Summary
Math skills such as addition and subtraction are used all the time in everyday life. Addition is the act of adding something, while subtraction is the act of taking something away. The “something” can be a number, or it can be an item such as a toy.
Key Concepts
- Addition is the act of adding something to something else.
- Subtraction is the act of removing something from something else.
- If you interrupt someone and don’t let them finish what they’re trying to say, you might miss something important.
Think Alouds
- Can you think of a time during your day when you need to add or subtract something?
- What would have happened in the beginning of the book if Albert had just let Wanda finish what she was trying to tell him?
Activities
Activity 1: Ten-frame 1-10
Materials
- A table with 1-10 written on it (download the 1-10 Table Counter pdf).
- Counters such as beads, mini-erasers, pom-poms, etc.
- Optional: Blank addition/subtraction sheet and pen (download the Fill-in Addition and Subtraction sheet pdf).
Instructions
- Provide each kid with the paper with 1-10 written on it or the 1-10 Table Counter.
- Have the kids practice adding and removing counters from the 10-frame and counting how many are remaining.
- Optional: Have the kids write their results on the blank addition/subtraction sheet.
Activity 2: Toy Exchange Addition and Subtraction
Materials
- 5-10 small toys per child, such as mini dinosaurs, action figures, balls, etc.
- Optional: Blank piece of paper and pen OR a blank addition/subtraction sheet and pen (download the Fill-in Addition and Subtraction sheet pdf).
Instructions
- Provide each kid with 5-10 small toys and place them into pairs.
- Have them practice negotiating exchanging toys. (E.g., “I’ll give you this t-rex for your ball.”)
- Have the kids count how many items they have.
- Repeat.
- Optional: Have the kids record their starting numbers, the numbers they added or removed, and the total result.
Activity 3: Read-along counters
Materials
- Pre-step: Download the Albert Adds Up Toy Clips pdf. Laminate (optional) and cut into pieces so every kid has one of each picture.
- Optional: Small box or container for the toys as a pretend toy box.
Instructions
- Provide each kid with one of each toy piece or with the “toy box” with toy pictures in it.
- As you read Albert Adds Up! have the kids play along, adding and removing toys from their “toy box” as Albert does in the story.
- Practice counting the total with the kids as you read along.





