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# Summary

Easy as Pie Fractions is a small fraction pie that was designed to help individuals to small groups learn how to add, subtract, multiply and divide ten different fractions, 1/1, 1/2, 1/3, 1/4, 1/5, 1/6, 1/8, 1/10, 1/12, and 1/16. Each piece of pie has the accompanying decimal point. The pie tin allows for a snug fit between the pieces, but the crust on the pie allows for easy removal of individual fractions. This hands on learning tool helps people who are struggling when it comes to understanding fractions by allowing them to physically manipulate fractions. The fraction pie pieces can be utilized in various lesson plans from beginner (e.g., adding fractions to make a whole) to intermediate (e.g., multiplying different fractions to create a mixed number).Please post your makes because I am interested in what you have used it for. Also feel free to comment on anthing you would like me to add. As always any Tips are greatly appreciated and will go towards the development of future projects.

# Print Settings

**Printer: **

Monoprice Maker select 3d printer

**Rafts: **

No

**Supports: **

No

**Resolution: **

0.1 layer height

**Infill: **

20%

**Notes: **

Printing one of each piece uses about 94 grams. However, I would personally not print out the 1/1 piece of pie. Using a higher quality print on the smaller fractions may yield better results. Be careful when scaling this print down too much because the numbers may not print clearly on the smaller fractions. I would also recommend printing the different size fractions in different colors; however, this is not required.

# Post-Printing

If you have scaled the pieces make sure that they all fit nicely into the pie tin. If they don't fit you may have scaled one or more of the pieces incorrectly. Check for a snug but not overly tight fit.

# How I Designed This

**Deciding and Designing**

When Thingiverse came out with their #MakerEdChallenge2 I really wanted to participate. Being new to 3D printing and just finishing an intro level engineering class I was motivated to create something that could help someone else learn. The most challenging part of creating the Easy as Pie Fractions was making it look good and be the right size. My first print of the smallest fraction (1/16) came out too small for the printer to print the numbers engraved in the piece clearly. I asked for advice from others and instead of changing a print setting, my teachers recommended that I scale it up because the pieces were small and easily lost. When I scaled up the smallest fraction I realized that the height of the pie made it look more like a cake. I could have called it Piece of Cake fractions and been done with it, but I stuck with my original idea. I had to completely remake the pie tin and cut off the bottom of the pie pieces. I had an idea of putting a pattern for the crust and engraving the side of the pie tin to make it look better so I added all that in. At this point I had about four different fractions but I didn't think that was enough so I added five more. I also added the number Pi on the pie tin as I thought it would help anyone who uses it later on when they are learning radius and circumference.

A helpful design tip I could give when making a fraction from a circle, is to find the center point and divide 360 by whatever you want the denominator to be. By doing this it will give you an angle that you can cut out of the circle with the center point being the pivot for the angle.

# Overview and Background

Easy as Pie Fractions are for children or adults who would benefit from a visual and tactile aid in helping them understand fractions.

# Lesson Plan and Activity

To complete this project you have to identify what specific fractions the students have trouble with and print out enough pieces to fill each pie tin.

Lesson Plan Ideas

-Adding fractions to make a whole

-Adding fractions to make another fraction

-Subtracting fractions from a whole

-Subtracting fractions from another fraction

-Multiplying fractions to make a whole

-Multiplying fractions to make another fraction

-Is dividing the same thing as a fraction?

-Dividing whole numbers

-Dividing fractions

# Materials Needed

3d printer and filament

# Project: Easy as Pie Fractions

**Project Name:**

Easy as Pie Fractions

**Overview & Background:**

Easy as Pie Fractions are for children or adults who would benefit from a visual and tactile aid in helping them understand fractions.

**Objectives:**

The students who use this are expected to learn how to add, subtract, multiply, and divide simple fractions. This hands on approach will also give students a better understanding of the reason behind their calculations.

**Audiences:**

Easy as Pie Fractions is designed for children between the grades 1st through 5th but can be used and enjoyed by people of all ages.

**Subjects:**

Easy as Pie Fractions is designed to be used individually or in small groups in a math class or club.

**Skills Learned (Standards):**

Students should have learned how to add, subtract, multiply, and divide the fractions provided.

**Lesson/Activity:**

To complete this project you have to identify what specific fractions the students have trouble with and print out enough pieces to fill each pie tin.

Lesson Plan Ideas

-Adding fractions to make a whole

-Adding fractions to make another fraction

-Subtracting fractions from a whole

-Subtracting fractions from another fraction

-Multiplying fractions to make a whole

-Multiplying fractions to make another fraction

-Is dividing the same thing as a fraction?

-Dividing whole numbers

-Dividing fractions

**Duration:**

Easy as Pie Fractions can take as little or as long as you want to spend working on fractions with your student. It can be used every day for group work with fractions which is what it was designed for.

**Preparation:**

Before students begin using Easy as Pie Fractions they need to know how to add, subtract, multiply, and divide whole numbers. They don’t actually need to know how to manipulate fractions with pen and paper. For example, if 1/2 and 1/4 are printed out, the students can physically see how the half would divide into two pieces and so on.

**References:**

No References.

**Rubric & Assessment:**

At the end of the project, the student should be able to understand the concept(s) addressed, depending on the specific lesson plan objective(s) chosen. If, for example, the objective was to learn the concept of adding fractions to make a whole, the student should be able to understand that three 1/3 pieces make a whole, four 1/4 pieces make a whole, five 1/5 pieces make a whole, etc.

**Handouts & Assets:**

No Handouts and Assets.