Writing Ratios to Describe a Picture

This lesson teaches how to write different ratios to describe a picture by considering parts and totals. It covers part to part ratios, such as 3 boys to 2 girls, and part to total ratios, like 3 boys to 5 total students. The lesson emphasizes that multiple correct ratios can describe the same picture, and it guides students through writing six different ratios for a given image. The lesson concludes by reinforcing the understanding of part to part and part to total ratios.

What is a part-to-part ratio?

• A comparison of a part to the whole

• A comparison of a whole to a part

• A comparison of two parts of a whole

• A comparison of two unrelated quantities

How many different ratios can be derived from a single picture according to the lesson?

• Two

• Four

• Six

• One

Which of the following is an example of a part-to-total ratio?

• 3 boys to 5 total students

• 5 total students to 3 boys

• 2 girls to 3 boys

• 3 boys to 2 girls

What is the correct way to flip a part-to-total ratio?

• Change the part to a different part

• Change the total to a different total

• Reverse the order of the part and total

• Multiply both the part and total by two

Which of the following statements is true about ratios?

• Ratios can be expressed in multiple correct ways

• Ratios can only be written in words

• Ratios are only applicable to numbers

• There is only one correct ratio for any given picture