This video tutorial from Xcelerate Maths introduces the DST triangle to help remember the rules for calculating speed, distance, and time. The tutorial explains how to use the triangle to derive each rule and provides examples for calculating distance, speed, and time. It includes practical examples such as a car journey, an express train, and a snail's pace. The video concludes with challenge questions, including calculating the speed of a snake and the time for a rocket to travel from Earth to the moon.

What is the purpose of the DST triangle in this lesson?

• To remember the rules for speed, distance, and time

• To understand geometric shapes

• To calculate the area of a triangle

• To solve algebraic equations

Tags

NGSS.MS-PS3-1

How do you calculate distance using the DST triangle?

• Distance equals speed plus time

• Distance equals time divided by speed

• Distance equals speed multiplied by time

• Distance equals speed divided by time

What is the formula for speed according to the DST triangle?

• Speed equals distance plus time

• Speed equals distance divided by time

• Speed equals time divided by distance

• Speed equals distance multiplied by time

Tags

NGSS.MS-PS3-1

How do you find time using the DST triangle?

• Time equals distance multiplied by speed

• Time equals speed divided by distance

• Time equals distance divided by speed

• Time equals speed plus distance

A car travels at 100 km/h for 4 hours. How far does it travel?

• 400 km

• 200 km

• 500 km

• 300 km

An express train travels 1500 km in 3 hours. What is its speed?

• 400 km/h

• 450 km/h

• 500 km/h

• 550 km/h

Tags

NGSS.MS-PS3-1

A snail moves 80 mm at a speed of 10 mm/s. How long does it take?

• 9 seconds

• 7 seconds

• 6 seconds

• 8 seconds

A snake can attack you in 0.2 seconds if you are 3 m away. What is its speed?

• 18 m/s

• 10 m/s

• 12 m/s

• 15 m/s

Tags

NGSS.MS-PS3-1

What is the distance from the earth to the moon?

• 384,000 km

• 400,000 km

• 350,000 km

• 370,000 km

Tags

NGSS.MS-ESS1-3

If a rocket travels at 7 km/s, how long will it take to reach the moon?

• 14.75 hours

• 12.5 hours

• 13.25 hours

• 15.25 hours