Lumos Video Store
This page provides a list of educational videos related to Approximations and Estimates. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Approximations and Estimates.
Addition Word Problems
By MathHelp.com
Students learn to solve addition and subtraction word problems. Note that key words for addition are: altogether total in all. Key words for subtraction are: left remaining more fewer increase go up grow decrease go down reduce. The key words for estimation are: estimate approximately. Instructor uses a white board. For fourth grade and up.
Addition Word Problems - YourTeacher.com - Math Help
By yourteachermathhelp
Students learn to solve addition and subtraction word problems. Note that key words for addition are: altogether total in all. Key words for subtraction are: left remaining more fewer increase go up grow decrease go down reduce. The key words for estimation are: estimate approximately. Instructor uses a white board. For fourth grade and up.
Sums and products of irrational numbers
By Khan Academy
Thinking about whether the sums and products of irrational numbers are rational or irrational.
Estimating Products | MathHelp.com
By MathHelp.com
This lesson covers perimeter. Students learn that the perimeter of a figure is the distance around the figure, so the perimeter of a figure can be found by adding the lengths of its sides. Since all four sides of a square are equal in length, the perimeter of a square that has a side with a length of 8 feet is 8 + 8 + 8 + 8, or 32 feet. Since opposite sides of a rectangle are equal in length, the perimeter of a rectangle that is 4.5 meters by 6.2 meters is 4.5 + 4.5 + 6.2 + 6.2, or 21.4 meters.
Estimating Quotients | MathHelp.com
By MathHelp.com
This lesson covers commutative property of multiplication, which states that a x b = b x a. For example, 10 x 4 = 4 x 10.
How To Solve Doppler Effect Physics Problems
By The Organic Chemistry Tutor
This physics video tutorial provides a basic introduction into the doppler effect of moving sound waves. it explains how to solve doppler effect problems in physics. Any time the source moves toward the observer or if the observer moves toward the source, the detected frequency will increase - that is - the observed frequency will be greater than the frequency emitted by the source. The source can be an ambulance truck or a police siren. If the source moves away from the observer or if the observer moves away from the source, the detected frequency will decrease. This video contains plenty of examples and practice problems of calculated the frequency detected by the observer.
ACT Aspire 2020-21 Blueprint and Best Practices | 10 Min. webinar organized by EdShorts
By Lumos Learning
This Free 10 Min power-packed webinar organized by EdShorts on Jan 20th provides all the information available about 2021 ACT Aspire Assessments - such as testing guidelines, blueprint changes, testing windows, and more! Join the EdShorts Facebook community today: https://www.facebook.com/groups/60370... for more bite-sized power-packed webinars every week!
How Do Oceans Circulate? Crash Course Geography #9
By Math and Science
Quality Math And Science Videos that feature step-by-step example problems!
Velocity Time Graphs, Acceleration & Position Time Graphs - Physics
By The Organic Chemistry Tutor
This physics video tutorial provides a basic introduction into motion graphs such as position time graphs, velocity time graphs, and acceleration time graphs. It explains how to use area and slope to calculate the velocity, acceleration, displacement, and whether if the particle is speeding up or slowing down. It also explains how to determine if the velocity is increasing or if the acceleration is positive.
Computational Linguistics: Crash Course Linguistics #15
By Math and Science
Quality Math And Science Videos that feature step-by-step example problems!