Understanding Ratios and Color Mixing

This grade six lesson focuses on experimenting with equivalent ratios, using paint mixing as a practical example. Students engage in a number talk to develop mental math skills, explore a Geogebra applet for visualizing ratios, and conduct hands-on activities to understand color mixing. The lesson concludes with practice exercises to reinforce the concepts learned.

What is the main focus of this lesson in terms of equivalent ratios?

• Calculating area of shapes

• Mixing colors to maintain the same shade

• Solving algebraic equations

• Doubling recipes for drinks

In the number talk, what is the result of 6 times 15 using number sense?

• 105

• 75

• 90

• 60

What tool is suggested for experimenting with color mixing?

• Protractor

• Ruler

• GeoGebra applet

• Calculator

If the original ratio of blue to yellow is 5 to 15, what is the ratio when doubled?

• 25 to 75

• 20 to 60

• 15 to 45

• 10 to 30

How can you create a bluer shade of green water?

• Decrease the amount of blue

• Keep the ratio the same

• Increase the amount of blue

• Increase the amount of yellow

What is the perfect purple water recipe ratio of blue to red?

• 12 to 4

• 6 to 2

• 10 to 5

• 8 to 3

Which combination will result in the same shade as the perfect purple water?

• 16 blue and 9 red

• 24 blue and 9 red

• 20 blue and 6 red

• 18 blue and 7 red

What is the ratio of milk to bananas in the smoothie recipe?

• 2 to 3

• 1 to 3

• 2 to 1

• 3 to 2

How can Claire make a darker shade of blue paint?

• Add more white paint

• Add more red paint

• Add more blue paint

• Add more water

What is the simplified ratio of yellow to blue in Diego's green paint?

• 10 to 2

• 5 to 2

• 5 to 1

• 2 to 5