**MUNCHABLE MATRICES**

*Munchable Matrices* is a graphic story on the meaning of matrix multiplication. Matrices store and manipulate data and are used in machine learning processes of neural networks.

See also:

*Transformative Matrices*graphic story*Understanding Neural Networks*infographic*Mathematics of Neural Networks*infographic

# COVER

^{See Gadanidis, Li, & Tan (2024)}

# PAGE 1: Frequency tables

# PAGE 2: Matrices

# PAGE 3: Matrix multiplication

# PAGE 4

# DO THE MATH

- Complete the matrix operations shown on the right.
- What is the meaning of the first operation?
- What is the meaning of the second operation?

- Study the matrix operations below:
- Which operations are possible?
- Why?
- What would be the dimensions of the resulting matrices?

- Describe a general rule for each of the following:
- Adding matrices:
- If 2 matrices can be added, what must be true about their dimensions?
- What would be the dimensions of the resulting matrix?

- Multiplying matrices:
- If 2 matrices can be multiplied, what must be true about their dimensions?
- What would be the dimensions of the resulting matrix?

- Adding matrices:

# PAGE 5: Matrices & neural networks

# REFLECT

**What did you learn?**

- What did you learn about matrix addition and multiplication?
- What was most interesting to you?
- What surprised you?
- What else do you want to know?