This lesson teaches how to measure mass using a balance scale. It explains the concept of mass, the use of balance scales, and common mistakes to avoid. The video demonstrates measuring the mass of a glue stick and a carrot, emphasizing the importance of balancing the scale before reading the mass. By the end, viewers will understand how to accurately measure mass in grams using a balance scale.

What is a common mistake when using a balance scale?

• Placing the object in the wrong container

• Using weights that are too heavy

• Adding too many weights at once

• Not letting the scale balance before reading the mass

What is the first step in measuring the mass of a glue stick using a balance scale?

• Add weights to both sides of the scale

• Place the glue stick in one container

• Start with the heaviest weights

• Ensure the scale is already balanced

How do you know when to stop adding weights to the balance scale?

• When the scale tips to one side

• When the weights are equal on both sides

• When the scale is completely balanced

• When the object is heavier than the weights

When measuring a carrot, why might you start with 10 gram weights?

• Because the carrot is lighter than a glue stick

• Because the scale requires it

• To quickly reach a balanced state

• To avoid using too many small weights

What is the total mass of the carrot when the scale is balanced?

• 50 grams

• 46 grams

• 40 grams

• 42 grams