KSP Математика 6 grade: Умножение отрицательных чисел

Introduction

This Grade 6 Mathematics lesson plan on “Multiplying Negative Numbers” helps teachers teach students rules for multiplying positive and negative numbers, understand the sign of the product, and apply it in problem solving.

Main material

Lesson objective: to develop the skill of multiplying negative numbers and correctly determining the sign of the product in various situations.

Expected outcomes:

students know rules for multiplying positive and negative numbers;
compute products with negative numbers correctly;
understand the relationship between the signs of factors and the product;
apply skills in practical problems.

Lesson structure:

Organization
Greeting.
Prior knowledge
Review positive and negative numbers, addition and subtraction with negative numbers.
New topic
Multiplication rules:
• (+) × (+) = +
• (+) × (-) = -
• (-) × (+) = -
• (-) × (-) = +
Examples:
• 5 × (-3) = -15
• -4 × 6 = -24
• -3 × (-2) = 6
Practice
Compute: -7 × 5, 8 × (-2), -3 × (-4), 6 × (-6)
Practical problem: temperature changes by -3°C each day for 4 days. Find total change.
Consolidation
Pair work: discuss solutions, check calculations, explain steps.
Reflection
Discuss applications (temperature, financial losses, water levels).
Conclusion
Summary, brief feedback, mention results (5–10%).

Teaching methods: explanation, practical work, pair work, visualization, discussion.

Frequently Asked Questions

How to multiply negative numbers?
Use the sign rule: (-) × (-) = +, (-) × (+) = -.

Example:
5 × (-3) = -15, -3 × (-2) = 6

What if one factor is negative?
The product is negative.

What if both factors are negative?
The product is positive.

Where is it applied?
Temperature, financial losses, practical calculations.

Other KSPs in this class

This Grade 6 Mathematics lesson plan on “Expressions with Variables” helps teachers teach students to understand, create, and calculate algebraic expressions containing variables …
Математика • 6 grade
This Grade 6 Mathematics lesson plan on “Multiplication of Decimal Fractions” helps teachers teach students to correctly multiply decimals, developing calculation skills and the a…
Математика • 6 grade
This Grade 6 Mathematics lesson plan on “Proportions” helps teachers teach students to understand and use the equality of two ratios in solving problems.
Математика • 6 grade
This Grade 6 Mathematics lesson plan on “Dividing Negative Numbers” helps teachers teach students rules for dividing positive and negative numbers, understand the sign of the quot…
Математика • 6 grade
This Grade 6 Mathematics lesson plan on “Rational Numbers” helps teachers introduce students to rational numbers, explain their properties, and apply knowledge in practical situat…
Математика • 6 grade
This Grade 6 Mathematics lesson plan on “Solving Equations” helps teachers teach students to independently find the variable values that satisfy an equation and apply this skill i…
Математика • 6 grade