Educational Corner

I will be publishing once a week about educational related topics. I will be teaching things such as Math.

Suggested website to see:

Khan Academy

Math #3 – May 18, 2016

Topic – Pythagorean theorem

Today I will be explaining about the Pythagorean theorem. This theorem is used to find the hypotenuse (the longest side of a right triangle) by using leg A and B.

The formula is a² + b² = c²

You can solve the equation by substituting the numbers into a and b. But if you’re trying to find one of the legs, for instance, a. Then you substitute the number for the hypotenuse (c) and leg b.

Math #2 – May 11, 2016

Topic – Slope and Intercept on a Graph

Today I will be explaining about slope and intercept on a graph. Usually when you need to find the slope, you also have to make an equation  in slope-intercept form.

Formula = y=mx+b

Slope is m

Y-Intercept is b

Note that always the y intercept is on the y-axis and the x intercept is on the x-axis.

For the y-intercept, you just look at where it starts on the y-axis. If it is 0, then it just starts at the origin which is (0,0).

To find the slope is just m= y2-y1 / x2-x1. You substitute the coordinates and the resulting number would be the slope.

Math #1 – May 4, 2016

Today I will be explaining about circles. When you use a formula, you substitute or take the place of. Like in the above examples the radius would 3 or 7. 3 squared is 9 and 7 squared is 49. Usually pi ( π ) is approximately 3.14. Then you get your final answer like 28.26 cm² .

Some facts about circles…

• Circles are 360 degrees.
• They have formulas such as the area, the circumference.
• A=πr² is the formula for area.
• Diameter is 1/2 of radius so if d is 8, the radius would be 4 since 8/2=4.