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• Square One Television: Using a Ruler

After making an error in their initial measurements an engineer teaches us the correct way to measure with rulers.

• Beakman's World: Hammer and Ruler Challenge

Beakman challenge: use a hammer to break a ruler without holding the ruler. When Lester tries the first time, the ruler flips off the table. Beakman lays two pieces of newspaper on the end of the ruler and now the ruler breaks. Beakman explains this is because of air resistance. Without the paper, the ruler didn't have much to resist but with the paper, it has to push that paper away too and since you hit it so fast with the hammer, it doesn't have time and it breaks.

• Sid the Science Kid: How Many Geralds

The students learn that they are able to be a little more creative with their measuring tools. Instead of simply using rulers, they begin to think of nonstandard measuring tools.

• Maths Mansion: Area of a Rectangle II

The kids use multiplication and their rulers to calculate the area of a rectangle in centimeters.

• Cyberchase: Building the Boat

The CyberSquad creates a boat that is one-tenth the size of the giant's boat so that it can successfully navigate the waters to the portal. The group's first attempt at building the boat fails, as each part came from a different size scale model. The gang uses blades of grass as rulers and finds boat parts with the correct dimensions to create a properly-sized boat.