Khan Academy
SAT Prep: Test 6 Section 9 Part 3
Working through problems 11-14 on the practice SAT, Sal shows students how to solve problems that look complicated, but can actually be quite simple. Problems involving algebraic expressions and geometric distances make up the rest of...
Khan Academy
SAT Prep: Test 3 Section 4 Part 1
Modeling quick thinking and efficient problem solving, Sal works through the linear equation in problem 1 in just over 30 seconds. This video, which covers problems 1-5 on page 530 of The Official SAT Study Guide, also shows students how...
Khan Academy
SAT Prep: Test 3 Section 2 Part 2
Problem number 6 on the practice SAT involves solving for a distance on a line, which Sal does in about 2 minutes. His method of efficiently (and correctly) solving problems is an excellent model for students who tend to panic at the...
Curated OER
SAT Prep: Test 8 Section 8 Part 1
Bringing the Khan Academy SAT video series to an end, Sal uses The Official SAT Study Guide to complete the final 16 problems (page 867). In this video, he solves problems 1-7 quickly and proficiently.
Curated OER
How Do You Figure Out the Rate Traveled if You Know Distance and Time?
If you know two values and are looking for a third, you can set up an equation and solve to find your answer. In this problem you know distance and time, and you are looking for rate of speed. Use the distance formula to set up your...
Curated OER
What is the Formula Connecting Distance, Speed, and Time?
The formula for uniform motion, meaning something is moving at a constant speed, is d=rt. This involves distance, rate, and time. If the word problem gives two of any of these values, the third unknown value can be found.
Curated OER
What Is the Distance Formula?
Find the distance between two points on a coordinate plane. How is that done? Let's take a look at the distance formula. What's the distance formula? Well, it's a form of the Pythagorean Theorem. How? Watch the instructor diagram and...
Curated OER
How Do You Find the Perimeter of a Shape?
Perimeter, area. Area, perimeter. Which is which? Perimeter is the distance around the edge of the shape. So all you have to do is add up the values.
Curated OER
Finding Rate (Distance/Time)
The rate of a moving vehicle is calculated in this video. A student does an equation on a whiteboard, as well as displays a real-life example of a moving truck. The video footage of a moving truck is a great way to connect this math...
Curated OER
A Distance and Time Problem Example
Through solving a word problem involving a train, the learner in this video describes how to complete a time vs. distance equation. This would be a useful resource because it provides a step-by-step explanation of the process.
Virtual Nerd
How Was the Distance Formula Derived?
Are you working on the distance formula? Derive the distance formula and help your learners by showing them the logic behind the distance formula. This practical video should help conceptual understanding and is appropriate for in-class...
Curated OER
How Do You Figure Out the Rate Traveled if You Know Distance and Time?
If you know two values and are looking for a third, you can set up an equation and solve to find your answer. In this problem you know distance and time, and you are looking for rate of speed. Use the distance formula to set up your...
Curated OER
How Do You Find the Perimeter of a Shape?
Perimeter, area. Area, perimeter. Which is which? Perimeter is the distance around the edge of the shape. So all you have to do is add up the values.
Curated OER
How Do You Find the Perimeter of a Rectangle?
The teacher illustrates a diagram to help you learn about perimeter. First she adds the sides together to get the perimeter. Then she shows how to use the perimeter formula to make it a bit simpler.
Curated OER
How Do You Find the Distance Between Two Points?
Learn how to use an algebraic formula to find the distance between two given points on a coordinate plane.
MinutePhysics
Distance and Special Relativity: How Far Away is Tomorrow?
The confusing negative properties of time and distance are clarified, quickly and succinctly, in a super-short clip. Make this a part of your presentation on the speed of light, or special relativity.
Curated OER
What is Work?
This engaging video reveals an older gentleman teaching youngsters about work, force, and distance. The children pick up an anvil and the gentleman explains that they haven't done any work because they haven't moved it over a distance....
Curated OER
What is Circumference?
There are actually two formulas to find the circumference of a circle. One formula is based on knowing the diameter of the circle, and the other is based on knowing the radius of the circle. The instructor illustrates both formulas. She...
Curated OER
How Do You Figure Out the Time Traveled if You Know Distance and Speed?
Yes, it's a word problem, but you know the formula for distance, d=rt. The word problem here gives you two values so all you have to do is plug them into the correct place and solve. Don't forget to use the division property of equality...
Curated OER
How Do You Solve an Opposite-Direction Travel Problem?
The quintessential word problem that makes everyone scream and run away. But wait, come back! Time, distance, when will they get there? You are really only working with one formula: distance= rate times time. You can do this. View this...
Curated OER
Measuring an Irregular Distance
The math pirate needs to measure a distance on his treasure map. He realizes that he's not measuring a straight line, but an irregular distance. This short clip is well done, it uses a real-life math application, concrete mathematical...
Virtual Nerd
What is a Vector?
Define a vector and teach your class about the different parts of a vector with this video. An instructor conveys what a vector is, labeling the parts and providing multiple examples. Learners can re-watch this video if they are...
Curated OER
How Do You Find the Rate of Change Between Two Points on a Graph?
The instructor uses a graph representing time and distance to illustrate how to solve this word problem. She explains each step: rate of change, distance, time, vertical change over horizontal change, change in distance, and change in...