The video “Additive Area Word Problems” demonstrates how to decompose an irregular shape into rectangles to find total areas.

This video explores five fun facts about polygons.

Introduce children to the concept of perimeter and explain how to calculate the perimeter of regular and irregular 2D shapes.

Introduce students to the concept of area and explain how to calculate the area of rectangles using the rule length x width.

This video explores five fun facts about pyramids.

This video discusses the different types of birthmarks, their causes, and how common they are. It also explains that not having a birthmark is not a cause for concern and that many birthmarks fade over time.

This EKG video explains how to use the 1500-method and the 300-method to determine HR from a regular rhythm.

This EKG video explains how to use the 6-second method to determine HR from an irregular rhythm.

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which...

👉 Learn how to evaluate the integral of a function. The integral, also called antiderivative, of a function, is the reverse process of differentiation. Integral of a function can be evaluated as indefinite integral or as a definite...

In this video, the teacher explains how writers use different verb tenses to describe different times and sequences in narrative writing. The teacher provides examples and guides the students through practice exercises to ensure they...

Conditional tense.

Verb conjugation.

This series of "what you don't know about..." give a different approach to the explanation of English grammar. They simply explain what you actually do not find in grammar books. Giving a wide angle on each topic. In this lesson for...

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which...

Subjunctive tenses.

Can you answer these questions about time signatures? This music theory lesson offers a quiz in which you get to decide what the time signature should be in a number of different bars. Sometimes there is more than one solution but how do...

For beginner English learners, this standards-based ELD video covers how to use a variety of verbs in different tenses (e.g, past, present, future, simple progressive) appropriate to the text type and discipline (e.g., simple past and...

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which...

The video is a beginner's guide to polygons. It defines what a polygon is and how it is classified into regular and irregular polygons, convex and concave polygons, based on their side lengths and angles. It also covers the names of...

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which...

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which...

👉 Learn about polygons and how to classify them. A polygon is a plane shape bounded by a finite chain of straight lines. A polygon can be concave or convex and it can also be regular or irregular. A concave polygon is a polygon in which...

👉 Learn how to determine the sum of interior angles of a polygon. A polygon is a plane shape bounded by a finite chain of straight lines. A regular polygon is a polygon whose sides are congruent (equal). The interior angle of a polygon...