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Transitioning from counting to multiplying to find area | 3rd grade | Khan Academy
By Khan Academy
finds the area of a rectangle both by counting unit squares and multiplying side lengths
Area | Maths Concept For Kids | Maths Grade 5 | Periwinkle
By Lumos Learning
Area | Maths Concept For Kids | Maths Grade 5 | Periwinkle
Understanding Geometry | MathHelp.com
By MathHelp.com
This lesson covers wind and current problems. Students learn to solve wind and current word problems using a system of linear equations, as demonstrated in the following problem. Into a headwind, the plane flew 2000 miles in 5 hours. With a tailwind, the return trip took 4 hours. Find the speed of the plane in still air and the speed of the wind. The two variables used in this problem are p, the speed of the plane in still air, and w, the speed of the wind. So the speed of the plane with a tailwind can be represented as p + w, and the speed of the plane against a headwind can be represented as p -- w. Note that this problem requires a chart to organize the information. The chart is based on the formula rate times time = distance. The chart is then used to set up the two equations.
Geometry Lessons | MathHelp.com
By MathHelp.com
MathHelp.com offers Algebra basics with custom courses for Pre-Algebra, Algebra 1, Algebra 2, Elementary Algebra, Intermediate Algebra, and College Algebra. Every lesson features videos, practice, self-tests, and more.
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!
Finding area by multiplying
By Khan Academy
Use unit squares to see why multiplying side-lengths can also find the area of rectangles. ������������������������
Rectangle area as product of dimensions same as counting unit squares | Pre-Algebra
By Khan Academy
Use unit squares to see why multiplying side-lengths can also find the area of rectangles. ������������������������
Rectangle area as product of dimensions same as counting unit squares
By Khan Academy
Use unit squares to see why multiplying side-lengths can also find the area of rectangles. ������������������������
Finding area by multiplying
By Khan Academy
Use unit squares to see why multiplying side-lengths can also find the area of rectangles. ������������������������