Видео

This tutorial shows how to solve linear equations using inverse operations. The tutorial includes two one step equation and two 2 step equations examples.

This tutorial shows how to solve linear equations using algebra tiles and how the algebra tiles model the "algebra" we do with the actual equation.

This tutorial shows how to combine (and and subtract) like terms and what "like terms" means. The tutorial also includes examples of how the Distributive Property works and how it is used to simplify algebraic expressions.

This tutorial shows how to multiply and divide fractions and rational numbers.

This tutorial shows six examples how to add or subtract fractions. Near the beginning the tutorial shows why you need a common denominator and how to find the least common denominator for 5 of the 6 examples.

This tutorial shows how to divide integers and relates how division of integers is the same as the multiplying rules for integers.

This tutorial shows how to multiply integers using a number line, then a generalization to: multiplying two integers with the same sign is positive, and multiplying two integers with opposite signs is negative

This tutorial shows how to subtract integers using a number line through several examples and then generalizes to keeping the same first number, and changing the subtraction to addition of the opposite second number

The tutorial shows how to add 2 integers through several examples. The first about 4:30 discusses with 5 examples how to add two integers with the same sign and from 4:30 to the end shows examples when you are adding one positive and one negative integer. The first 13 minutes (approximately) shows using a number line how to model add integers. The last 4 minutes demonstrates how to use integer ...

This tutorial explains why horizontal translation factors are opposite what they first appear as. For example, y = (x - 3)² is y = x² translated 3 units to the right, not 3 left and y = (x 7)² is y = x² translated 7 units left (not right).

This tutorial shows (and explains) how to use the pencil tool in Mathify and the shift key to draw figures where all sides are joined together.

This tutorial shows some properties of inscribed and central angles, how a perpendicular to a chord bisects the chord and that any angle inscribed in a diameter is a right angle.

This tutorial describe the Birthday Problem (or Paradox). Several common calculations are shown for the Birthday Problem.

This tutorial shows how to find the equation of a tangent line to a curve that passes through a point external to the curve.

Divisibility Rule for 13

Divisibility Rule for 12

Divisibility Rules for 11

Divisibility Rule for 10

Divisibility Rule for 9

Divisibility Rule For 8

Divisibility Rule For 7

Divisibility Rule For 6

Divisibility Rule For 5

Divisibility Rule for 4

Divisibility Rule For 3

Divisibility Rule For 2

Completing the Square

What is an Equation between Variables

Box and Whisker Plots on Google Sheets