Fraction Mash Activity 2: Put a Face On It

Representing Parts of the Whole: Partitioning Using Grids

Activity Prompt

Intro: Have you imagined seeing faces in everyday objects like an outlet or a soda can?

What if the face was really there? What if it were your face? In this activity, you will mash up parts of your face with an object you choose.

Add personality to something, create a mysterious picture, and use the Fraction Mash tool to achieve a composition that looks as though it was meant to have your face built into it.

Put A Face On It: In this activity, students will experiment with different grid options and fractional parts to give a face to an otherwise faceless object. To satisfy the challenge, students will create four mashups using the following grid options: columns, rows, pie slices and custom. They can use the same face and object, or change it up for each grid.

To Do:

Put A Face On It (20 minutes):

Open the app, and select “Make A Mashup.”

Have students choose two pictures to mash up.

For this challenge, a bright face and any object will potentially satisfy the challenge.

• Import from camera roll or take new photos. Pinch to re-size or rotate with attention to how the face image will overlay onto the object.
• Have students make multiple mashups using the following grids: columns, rows, pie slices and custom. Each grid presents its own challenges to create a coherent image.
• Once students have two pictures in place, choose a grid from the options below the two images. Then choose a denominator to start with by swiping the denominator left or right.
• Tap grid sections on either photo to turn the sections on and off. Click combine to see how the mashup looks, save if you’re satisfied, and go back to Create to keep mashing.
• Repeat until you’ve created mashups using columns, rows, pie slices and custom grids.
• Be sure to save your mashups.

Discussion

Prompt students to describe the mashups they made and what they had to do to achieve certain outcomes. Encourage students to think about how changing the grids and denominators affected their project.

Ask students:

• “As you played with your mashup, were there specific parts of your face that became most important to you desired outcome?” (e.g. Were your eyes more important than your cheeks?)
• “What other objects would you like to use?
• “Why would some objects work better than others?” (Is there something about the fractional parts of those objects that would make a more successful mashup?)
• How does your understanding of fractions help with creating your mashup mashups?

Name: __________________________ Date: _____________

Fraction Mash Quick Intro Activity: Face Mashup

Create some face mashups by taking pictures of you and your friends then experimenting with the fractional components for different mashups.

To Do

1. Take two new pictures, or use pictures from your camera roll. Re-size the pictures by pinching to line up features like eyes and mouths.
2. Start with a denominator of 4. Choose the parts on the left picture that you want to mash up with the unselected parts of the right picture. Select Combine.
3. Go back and forth between creating and combining until you achieve mashups that you’re happy with. Do this three more times for the following denominators: 9, 16, 25.
4. Save your best mashups and prepare to discuss (using mathematical language) what you did to achieve the best effects.

Fraction Mash Quick Intro Activity: Face Mashup

Reflection Questions:

1. As you created mashups and changed the denominator, what did you notice? Did you find a denominator worked best? Why?

2. Try this challenge again with the custom grid and increase the rows and columns to 15 x 15, resulting in 225 for a denominator. How does this affect your ability to create the result that you think works best?