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Area and Perimeter - Khan Academy
By Khan Academy
Start by learning how to calculate the perimeter and area of squares, rectangles, and triangles. Note the explanation of why perimeter measurements are in meters and area measurements are in square meters.
3.MD.6 - Measure Area by Counting Unit Squares
By MathwithMrAlmeida
how to measure or find the area of a plane (flat) figure by counting the unit squares that tile the shape for 3.MD.6,
Area of rectangles and the distributive property | Measurement | Pre-Algebra | Khan Academy
By Khan Academy
Use the distributive property to find area of rectangles
Comparing areas of plots of land | Measurement | Pre-Algebra
By Khan Academy
Find area of two rectangles to solve a word problem.
Measuring area with partial unit squares | Math | 3rd grade | Khan Academy
By Khan Academy
finds the area of a shape by counting whole and partial unit squares.
Finding Area of Complex Figures
By MuchoMath
The instructor demonstrates how to find the area of complex figures consisting of one or more rectangles. They show how to break the figure up into two different figures and then add the areas together. The first figure is in the perimeter video so to find the missing sides you could watch that video or just go on in this video and they give you the measurements. They discuss the formula for area of a square and rectangle and use this to find the area of the two figures and then add them together. They also discuss why the area is label as cm squared or inches squared. Then other examples are shown. Video is good quality and good for all students as review or initial learning of the concept.
Area | Maths Concept For Kids | Maths Grade 5 | Periwinkle
By Lumos Learning
Area | Maths Concept For Kids | Maths Grade 5 | Periwinkle
Area for Kids
By
Math is fun! Learn about area in this math video for kids! You will learn the difference between perimeter and area, learn how area works and even learn how to find the area of rectangles and squares!
Area of an equilateral triangle | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
Finding the formula for the area of an equilateral triangle with side s. All Khan Academy content is available for free at www.khanacademy.org
Rectangle problems
By AcademicLeadersEd
Area and perimeter problems where the sides are expressed using algebra.
Binomial Expansion Using Pascal's Triangle
By Mathispower4u
This video explains binomial expansion using Pascal's triangle.
[4.MD.3-1.0] Area and Perimeter - Common Core Standard
By Freckle education
Apply the area formula for rectangles in real world and mathematical problems
[4.MD.3-2.0] Area and Perimeter - Common Core Standard
By Freckle education
Apply the perimeter formula for rectangles in real world and mathematical problems
Area of diagonal generated triangles of rectangle are equal | Geometry | Khan Academy
By Khan Academy
In this video, Mr. Khan draws a box and two intersecting lines that produce several triangles. Mr. Khan proves that the area of these diagonal-generated triangles of the rectangle are equal. He goes over the formula for finding the area of a triangle. Sal Khan is the recipient of the 2009 Microsoft Tech Award in Education. The screen gets busy (and dark)--the viewer may want to open to 'full screen' to see everything. The sound is a little low
Special Right Triangles in Geometry: 45-45-90 and 30-60-90
By PatrickJMT
Special Right Triangles in Geometry: 45-45-90 and 30-60-90 degree triangles. In this video, I discuss two special right triangles, how to derive the formulas to find the lengths of the sides of the triangles by knowing the length of one side, and then do a few examples using them!
Triangles
By MathPlanetVideos
Find out whether the triangles are right, isosceles, acute, scalene, obtuse or equilateral