Algebra Adventures: Unlocking Variables
Open this deck in Kuraplan
Sign in to view all 8 slides, customise, present or download.
Slide preview
First 8 of 8 slides
Algebra Adventures: Unlocking Variables
Year 7 Mathematics Discovering the Power of Variables 100 minutes of mathematical exploration
Do Now: Mathematical Warm-Up
Calculate: 5 + 3 × 2 Simplify: (10 - 4) ÷ 2 Find the missing number: 8 + ? = 15 What comes next: 2, 4, 6, 8, ?
What is a Variable?
A letter that represents an unknown or changing value Like a mystery box that can hold different numbers Common variables: x, y, z, a, b, c Variables help us write mathematical rules and formulas
Variables in Real Life vs Mathematics
{"left":"Temperature changes throughout the day\nYour age increases each year\nSpeed of a car varies\nNumber of students in class changes","right":"T = temperature\nA = age\nS = speed\nN = number of students"}
Finding Variables in Formulas
Area of rectangle: A = l × w Perimeter of square: P = 4s Total cost: C = n × p Distance traveled: D = s × t
Substitution Challenge
Given: A = l × w If l = 6 and w = 4 Find the area A Show your working step by step
Check Your Understanding
If P = 4s represents the perimeter of a square And s = 7 centimeters What is the perimeter P? Turn and talk with your partner!
Mathematical Wisdom
Variables are the keys that unlock mathematical mysteries Today we learned to identify variables and substitute values Next lesson: Creating our own algebraic expressions!