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Basic Math for 8-9 Graders
Rating: 3.5 out of 5(24 ratings)
1,585 students

Basic Math for 8-9 Graders

Review Your Math Skills
Created byMari Hayashi
Last updated 7/2023
English
English [Auto],

What you'll learn

  • 1. Mixed Number and Improper Fraction
  • 2. Prime factorization, Greatest Common Factor, and Least Common Multiple
  • 3. Order of Operations and other rules on calculation
  • 4. Exponential Expression (Part 1)
  • 5. Exponential Expression (Part 2)
  • 6. Plot Points on the Coordinate Plane (Part 1)
  • 7. Plot Points on the Coordinate Plane (Part 2)
  • 8. Plot Points on the Coordinate Plane (Part 3)
  • 9. The area of the trapezoid ( Part 1)
  • 10. The area of the trapezoid( Part 2)
  • 11. Graph the Reflection Image of the Triangle over the Y-axis
  • 12. Statistical Graph - Draw a Bar Graph -

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Course content

2 sections • 20 lectures • 1h 56m total length

  • Introduction Video0:26

    Introduce basic math concepts for 8-9 graders in this introduction video, setting foundations for the course.

  • Mixed Number and Improper Fraction6:41

    convert mixed numbers, proper fractions, and improper fractions; divide fractions by turning division into multiplication; add, multiply, and simplify using common denominators and long division.

  • Prime Factorization, Greatest Common Factor, and Least Common Multiple7:19

    Learn how to write numbers as products of prime factors and use them to find the greatest common factor and least common multiple for simplifying and adding fractions.

  • Order of Operations and Other Rules on Calculation8:06

    Master the order of operations, including parentheses and exponents, then apply left-to-right rules for multiplication, division, addition, and subtraction, plus sign and negative sign rules.

  • Exponential Expressions (Part 1)7:51

    Explore exponential expressions, their base and exponent, and how to multiply identical bases by adding exponents, handle division via negative exponents, and apply basic rules.

  • Exponential Expressions (Part 2)3:18

    Explore exponential expressions, including base and exponents, square roots, and evaluating expressions with parentheses to understand exponents such as three squared and four squared.

  • Plot Points on the Coordinate Plane (Part 1)4:53

    Plot a point on the coordinate plane using an x y pair, identify the x and y coordinates, and locate the origin along the x axis and y axis.

  • Plot Points on the Coordinate Plane (Part 2)5:27

    Plot a point on the coordinate plane using the x and y coordinates from the origin, moving five to the right and two up.

  • Plot Points on the Coordinate Plane (Part 3)3:43

    Plot points from a table of values on the coordinate plane, using x coordinates and y coordinates, starting at the origin, then draw a line through the plotted points.

  • The Area of the Trapezoid (Part 1)4:50

    We find the vertices of the trapezoid on the coordinate plane, then find the area.

  • The Area of the Trapezoid (Part 2)6:24

    We find the vertices of the trapezoid on the coordinate plane, then find the area.

  • The Side Lengths of the Trapezoid (Part 1)5:00

    Compute coordinates of trapezoid vertices A, B, C, D on the coordinate plane and determine side lengths, noting AB and CD are parallel.

  • The Side Lengths of the Trapezoid (Part 2)6:26

    Learn to find trapezoid side lengths on the coordinate plane using the Pythagorean theorem, forming right triangles and computing sides like the square root of five.

  • Graph the Reflection Image of the Triangle over the Y-axis6:12

    Graph the reflection of triangle ABC over the y axis by flipping its vertices across the y axis, turning A(2,2), B(4,2), C(4,5) into A'(-2,2), B'(-4,2), C'(-4,5).

  • Statistical Graph - Draw a Bar Graph -9:57

    Learn how bar, line, and pie graphs visualize real data, from summer activity choices to growth trends and lunch preferences, with hands-on and Excel plotting.

Requirements

  • You need the learning experience of Elementary Math.
  • You don’t need to be students in grades 8-9th.

Description

In this course, you will master math concepts that are essential to solving math at the high school level. This course consists of five video lectures: mixed number and improper fractions, prime factorization, order of operations and other rules on calculation,  exponential expressions, and plotting points on the coordinate plane. Each video describes math concepts in detail using handwriting, narrations, and captions. Visuals with narrations will be easy to follow the instructions. These concepts are instructed in middle school math. However, I often see my students have ambiguous knowledge of them.  In this course, I select topics with which my students tend to be confused. It is good for you to review those. Math videos include English and Spanish captions. Math terminology is a universal language. If you are comfortable learning math in your native language, first, learn in your language, then relearn in English. I recommend watching videos at your own pace. Once you understand basic math rules, it will become easier to solve math problems. Be aware that your math skills will improve when you get basic knowledge and have confidence in math.  Don't rush to learn. Deep and accurate knowledge is good for math. The course will continue to grow. If you complete this course, you will receive information when the course expands.

Who this course is for:

  • People who wants to be comfortable with learning Math.
  • People who are struggling with Math.
  • People who want to review knowledge in Math.
  • People who want to learn with dual captions.

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