The video tutorial explains how to use the DST triangle to calculate distance, speed, and time. The DST triangle helps remember the formulas by arranging the letters D, S, and T in alphabetical order and using dividing lines. To find a formula, cover the letter of the variable you need to find. The video provides examples for calculating speed, distance, and time using the DST triangle, demonstrating the process with practical questions.

What is the primary purpose of the DST triangle?

• To calculate the area of a triangle

• To help remember the formulas for speed, distance, and time

• To solve quadratic equations

• To measure angles in a triangle

In what order should the letters be placed in the DST triangle?

• S, D, T

• D, S, T

• T, S, D

• D, T, S

If you need to find the speed, which letter should you cover in the DST triangle?

• D

• None

• S

• T

Tags

NGSS.MS-PS3-1

What operation do you perform to find speed using the DST triangle?

• Add distance and time

• Multiply distance by time

• Subtract time from distance

• Divide distance by time

Tags

NGSS.MS-PS3-1

A car travels 5 miles in 6 minutes. What is its speed in mph?

• 30 mph

• 40 mph

• 60 mph

• 50 mph

An airplane flew at 400 mph for 3.5 hours. How far did it travel?

• 1,200 miles

• 1,300 miles

• 1,400 miles

• 1,500 miles

To find the distance using the DST triangle, which letter should you cover?

• D

• S

• None

• T

Brian plans to cycle 84 km at a constant speed of 24 km/h. How long will it take him?

• 3 hours

• 4 hours

• 3.5 hours

• 2 hours

To find the time using the DST triangle, which letter should you cover?

• None

• T

• S

• D

What operation do you perform to find time using the DST triangle?

• Multiply distance by speed

• Divide distance by speed

• Subtract speed from distance

• Add distance and speed