Our young presenter ventures fearlessly into the negative zone to learn how to add, subtract, multiply and divide positive and negative numbers. A variety of highly visual tools are presented in a fun format to help students make sense of the rules for integer operations. Plugs removed from a wood block represent positive quantities and the remaining holes, negative quantities.

Grade Level:

Middle

High

Length:

00:12

Key concepts explained: linear equations and their graphs, and the domain of an equation.

Grade Level:

Middle

High

Length:

00:16

The key concepts learned in Part 1 are applied with variations.

Grade Level:

Middle

High

Length:

00:17

A teen with a job faces all kinds of decisions about how to use that paycheck: go out to dinner or save for a car? A new iPod or college tuition? Spring break at the beach or a long-term investment? Program introduces the concepts of money management and financial planning for the future in a fun, easy-to-understand manner.

Grade Level:

Middle

High

Length:

00:21

Key concepts explained: converting percentages into decimals and fractions, and converting decimals and fractions into percentages.

Grade Level:

Middle

High

Length:

00:22

This programs shows how to measure the dimensions of common 3D objects. The calculations needed to obtain their surface areas and volumes are also illustrated. The solids featured are polygon-based prisms and pyramids, cones, cylinders and spheres. The recognizable objects used in this program vary from well-known snack containers to the pyramid of Cheops.

Grade Level:

Middle

High

Length:

00:23

This programs shows how to measure the dimensions of common 3D objects. The calculations needed to obtain their surface areas and volumes are also illustrated. The solids featured are polygon-based prisms and pyramids, cones, cylinders and spheres. The recognizable objects used in this program vary from well-known snack containers to the pyramid of Cheops.

Grade Level:

Middle

High

Length:

00:25

Key concepts explained: horizontal and vertical lines, positive and negative slopes, calculating a slope by measuring its rise and run, and calculating a slope by using two points on a coordinate plane.

Grade Level:

Middle

High

Length:

00:24

Algebra helps our engaging teenage hostess, as she calculates the amounts of recipe ingredients needed to cook for and then serve, a sizable party:

1. To avoid confusion, when we write a formula we leave out the multiplication sign “x”, and instead put the number, the constant, in front of the variable, which is “X” in this case.

Grade Level:

Middle

High

Length:

00:19

Continuing on from Part 1, more formulas are induced from patterns, this time concerning the number of trays needed to serve varying slices of pastries, that are more complicated than those in the first part. We combine formulas by adding and subtracting like terms. We call this simplifying the expression.

Grade Level:

Middle

High

Length:

00:13

--formulas for a parallelogram (square, rectangle, and rhombus)

--formulas for a trapezoid, triangle, and circle

Grade Level:

Middle

High

Length:

00:27

--expressing a probability between certainty and impossible as the likelihood of an uncertain event occurring

--conducting and recording probability experiments using small and large number trials with replacement

--calculating the theoretical probability of a particular event occurring

--expressing probabilities as odds

Grade Level:

Middle

High

Length:

00:13

--calculating the complement of an event (the probability of the event not occurring)

--the changing probabilities of each of three events occurring in a small number trial experiment without replacement

--representing all possible outcomes from multiple events with a tree diagram

Grade Level:

Middle

High

Length:

00:15

--similar triangles

--finding an unknown height in a similar triangle

--tangent ratios of varying angles

--hypotenuse, adjacent, and opposite sides

--using a calculator to find the tangent ratio of any angle

--using tangent ratios to find an unknown adjacent or opposite side length

Grade Level:

Middle

High

Length:

00:22

--tangent, sine and cosine ratios

--using a trigonometric ratio to calculate the lengths of the other sides of a right triangle when an angle and one side length are known

--using a trigonometric ratio to calculate an angle of a right triangle when two side lengths are known

--using the mnemonic acronym SOHCAHTOA

Grade Level:

Middle

High

Length:

00:29