# Slice Fractions: School Edition

- fractions
- patterns

- part-whole relationships
- problem solving
- solving puzzles
- strategy

###### Pros

Increasingly challenging puzzles cover range of concepts.###### Cons

Without hints, kids may get frustrated by some of the more difficult challenges.###### Bottom Line

A fun, innovative way to help kids build a strong conceptual understanding of fractions.None

Slicing and dropping objects to help an adorable woolly mammoth is fun and addictive, and kids will enjoy earning silly hats as they complete stages.

By slicing objects to make equal shares or to generate a given fraction, kids build a conceptual understanding of fractions. Content increases in difficulty, and kids have to use critical-thinking skills to solve the puzzles.

The first few puzzles help kids learn how to slice and drop objects, so they can apply these skills as the puzzles begin to teach about fractions. Hints are vague and sparse. A Teacher's Guide has great tips.

You could use Slice Fractions as a way to reinforce concepts. Each puzzle can be solved an unlimited number of times, so once all levels are unlocked, kids can share devices. But keep in mind that they won't be able to win their own badges or hats, so you may have to come up with your own way to track students' progress and possibly provide motivational rewards. Kids could also work in small groups, taking turns to solve a puzzle or working collaboratively to solve a particularly challenging level. Since learning is so closely tied in with gameplay, it's a good idea to follow up with a discussion of the concepts that were covered in each stage of the game. There is a downloadable Teacher's Guide with excellent summaries of the learning objectives and some great suggestions for integrating the game into the classroom.

Read More Read LessSlice Fractions: School Edition is a series of leveled math puzzles that require kids to strategically slice and drop parts of a whole, teaching them about fractions. There are three main stages of learning, and each stage has several puzzles that increase in difficulty and cover different skills. In the first level, Split Groups, the puzzles teach kids how to split groups and shapes into equal shares, understand that shapes can be compared to a common whole, and understand that upper symbols (which represent numerators) count equal parts. In the second level, Slice Shapes, kids learn how to read fractions and interpret a numerator and denominator. The third level, Shape Comparison, teaches kids how to order fractions, make equivalent fractions, and subtract fractions from 1. Kids earn silly hats for the mammoth and badges of achievement as they complete stages in each level. There's no penalty for getting a puzzle wrong the first time, so kids can keep trying until they succeed.

Read More Read LessKids can learn about fraction concepts including part-to-whole relationships, numerator and denominator notations, equivalent fractions, ordering fractions, and subtracting fractions from 1. Kids have to solve puzzles by slicing shapes into a specific number of parts and strategically dropping the parts so they crush obstacles in a mammoth's path. But if kids drop too many parts, the path won't be adequately cleared and they'll have to start over. Learning is progressive, as kids start by slicing and dropping just to get a feel for the game. As difficulty increases, kids have to slice ice or lava into the correct number of sections and drop the sections to match fractions on the ground below. By working with fraction models and numerical representations, kids can build a strong conceptual understanding of fractions that will be extremely useful as they move to higher grades. Kids also have to think strategically and use problem-solving skills, which they can apply to many disciplines or real-world situations. The app is nicely aligned to a handful of Common Core Math Standards, so teachers will appreciate this added value. This school edition has a menu that organizes the learning progression into clear categories, which is very helpful. It would be great if kids or teachers could create user profiles to track individual student progress and performance.

Read More Read Less## Key Standards Supported

## Number And Operations—Fractions | |

5.NF: Use Equivalent Fractions As A Strategy To Add And Subtract Fractions. | |

5.NF.1 | Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators. For example, 2/3 + 5/4 = 8/12 + 15/12 = 23/12. (In general, a/b + c/d = (ad + bc)/bd.) |

4.NF: Build Fractions From Unit Fractions By Applying And Extending Previous Understandings Of Operations On Whole Numbers. | |

4.NF.3.a | Understand addition and subtraction of fractions as joining and separating parts referring to the same whole. |

Extend Understanding Of Fraction Equivalence And Ordering. | |

4.NF.1 | Explain why a fraction a/b is equivalent to a fraction (n × a)/(n × b) by using visual fraction models, with attention to how the number and size of the parts differ even though the two fractions themselves are the same size. Use this principle to recognize and generate equivalent fractions. |

4.NF.2 | Compare two fractions with different numerators and different denominators, e.g., by creating common denominators or numerators, or by comparing to a benchmark fraction such as 1/2. Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with symbols >, =, or <, and justify the conclusions, e.g., by using a visual fraction model. |

3.NF: Develop Understanding Of Fractions As Numbers. | |

3.NF.1 | Understand a fraction 1/b as the quantity formed by 1 part when a whole is partitioned into b equal parts; understand a fraction a/b as the quantity formed by a parts of size 1/b. |

3.NF.3 | Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size. |

3.NF.3.a | Understand two fractions as equivalent (equal) if they are the same size, or the same point on a number line. |

3.NF.3.b | Recognize and generate simple equivalent fractions, e.g., 1/2 = 2/4, 4/6 = 2/3). Explain why the fractions are equivalent, e.g., by using a visual fraction model. |

3.NF.3.d | Compare two fractions with the same numerator or the same denominator by reasoning about their size. Recognize that comparisons are valid only when the two fractions refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g., by using a visual fraction model. |

#### See how teachers are using Slice Fractions: School Edition

#### Teacher Reviews

- Visually based math app is like “angry birds” for fractions5August 18, 2014
- Engaging Way to Learn the Concept of Fractions4August 17, 2014
- great graphics, but not what I expected2August 11, 2014