Matrix Introduction

MATRIX INTRODUCTION

LEARNING GOAL: to recall matrix vocabulary and model practical situations using matrices.

​A matrix is a rectangular array of numbers enclosed by brackets and denoted by a capital letter.
A matrix is displayed in the form of rows (horizontal) and columns (vertical).

Multiple Choice

What is the number at a₂₂?

• 4

• 5

• 6

• 7

• 8

Multiple Choice

What is the number at b₁₃?

• 2

• 6

• 8

Multiple Choice

What is the number at c₃₁?

• 5

• 7

• 16

Multiple Choice

What is the number at d₂₁?

• 6

• 8

• 9

Fill in the Blank

What is the order of matrix B?

Fill in the Blank

What is the order of matrix C?

Fill in the Blank

What is the order of matrix D?

Fill in the Blank

What is the order of matrix E?

Fill in the Blank

What is the order of matrix F?

​The next few questions will test your skills in interpreting a matrix.

Fill in the Blank

What is the order of matrix B?

Fill in the Blank

What number is at b₁₂?

Fill in the Blank

Which element gives the number of girls in Year 12?

Fill in the Blank

How many boys are there in total?

Fill in the Blank

How many students are there in year 11?

Multiple Choice

Which network diagram matches this matrix?

Multiple Choice

Which network diagram matches this matrix?

Multiple Choice

Which network diagram matches this matrix?

Multiple Choice

Which network diagram matches this matrix?

Poll

Did we achieve our learning goal?

• I don't understand this yet

• I need more practice

• I understand and can do this by myself

• I can do this well enough to explain it to someone else

Match

Matching activity

• Order / Dimension

• Vertex

• a_rc

• element

Row x Column

Point of connection in a network diagram

Describes the location of an element

A number within a matrix

• Row x Column

• Point of connection in a network diagram

• Describes the location of an element

• A number within a matrix