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Try reviewing these fundamentals first

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Get Started NowStart now and get better maths marks!

Get Started NowStart now and get better maths marks!

Get Started NowStart now and get better maths marks!

Get Started Now- Intro Lesson: a2:26
- Intro Lesson: b10:56
- Intro Lesson: c2:02
- Intro Lesson: d5:24
- Intro Lesson: e6:52
- Lesson: 1a2:06
- Lesson: 1b2:00
- Lesson: 1c2:26
- Lesson: 1d1:39
- Lesson: 2a1:59
- Lesson: 2b1:47
- Lesson: 2c2:25
- Lesson: 2d2:50
- Lesson: 3a1:50
- Lesson: 3b1:49
- Lesson: 3c2:00
- Lesson: 3d1:51
- Lesson: 4a1:51
- Lesson: 4b1:37
- Lesson: 4c1:54
- Lesson: 4d1:55
- Lesson: 5a1:34
- Lesson: 5b2:01
- Lesson: 5c6:39

In this lesson, we will learn:

- The parts of a math equation for all four operations: addition, subtraction, multiplication, division
- How to do basic algebra: solving for unknowns (variables) in equations
- How to write algebra equations from word sentences by using equation models to help

- A math
**equation**can be thought of as a mathematical*sentence*which needs**terms**, an**operation**and an**answer**

- An
**unknown**is a value that we don't know in an equation yet; we need toto find the unknown through__solve the equation__*guess-and-check*(knowing that values must be equal on both sides of the equal sign)

**Algebra**is a type of math where we will see BOTH numbers and**letters**(or**symbols**)!- We use
**variables**(letters or symbols) to represent unknown values:

**Equation models**help identify all the terms when you're dealing with word sentences so that you can__write an algebra equation__

- i.e. "36 added to 41 equals $y$." $\,$→$\,$36 + 41 = $y$
- i.e. "15 less than $f$ equals 13." $\,$→$\,$$f$ - 15 = 13
- i.e. "2 times as many as 7 is $m$." $\,$→$\,$2 × 7 = $m$
- i.e. "$x$ is 3 times less than 15" $\,$→$\,$$x$ = 15 ÷ 13

- Keywords (key phrases) for each operation include:
- Addition: "added to", "more than", "increased by"
- Subtraction: "subtracted from", "less than", "decreased by"
- Multiplication: "multiplied by", "times", "times as many", "each", "groups"
- Division: "divided by", "times as many", "split into groups"

- IntroductionIntroduction to Variables in Algebra:a)What are equations?b)What are unknowns and how do you find out their value?c)What are variables?d)What are the equation models for the four operations?e)How to write algebraic equations from sentences
- 1.
**Unknowns in addition or subtraction equations**

Draw the missing circles in the unknown box. Write the missing number in the equation.a)b)c)d) - 2.
**Unknowns in multiplication or division equations**

Finish drawing the circles to solve the equation. Trace around the circles to make equal groups.a)b)c)d) - 3.
**Writing equations with variables for addition or subtraction**

Write the equation with variables for the phrase:a)10 more than $h$ equals 64b)73 increased by $x$ equals 109c)$b$ less than 8 equals 2d)24 decreased by $s$ equals 17 - 4.
**Writing equations with variables for multiplication or division**

Write the equation with variables for the phrase:a)the product of 4 and 6 equals $a$b)9 times $j$ equals 72c)the quotient of 24 and 3 equals $c$d)$k$ divided by 10 equals 5 - 5.
**Equations with variables: word problems**

Write the equation for the word problem. Use the variable $x$ for the unknown value.a)Allie picked 9 strawberries and Troye picked 8 strawberries. How many strawberries did they pick in total?b)Brian got 24 on the quiz. Ellie got 2 points less than Brian. How many points did Ellie get on her quiz?c)For which case should you use multiplication or division?- There are 5 red apples. There are 2 times as many green apples as red apples. How many green apples are there?
- There are 8 red apples. There are 2 times as many red apples as green apples. How many green apples are there?