### General Information

**Subject Area:**Mathematics (B.E.S.T.)

**Grade:**3

**Strand:**Geometric Reasoning

**Date Adopted or Revised:**08/20

**Status:**State Board Approved

Solve mathematical and real-world problems involving the perimeter and area of rectangles with whole-number side lengths using a visual model and a formula.

*Clarification 2:* Two-dimensional figures cannot exceed 12 units by 12 units and responses include the appropriate units in word form.

Course Number1111 |
Course Title222 |

5012050: | Grade Three Mathematics (Specifically in versions: 2014 - 2015, 2015 - 2022, 2022 and beyond (current)) |

7712040: | Access Mathematics Grade 3 (Specifically in versions: 2014 - 2015, 2015 - 2018, 2018 - 2022, 2022 and beyond (current)) |

5012055: | Grade 3 Accelerated Mathematics (Specifically in versions: 2019 - 2022, 2022 and beyond (current)) |

5012015: | Foundational Skills in Mathematics 3-5 (Specifically in versions: 2019 - 2022, 2022 and beyond (current)) |

Access Point Number |
Access Point Title |

MA.3.GR.2.AP.3 | Solve mathematical and real-world problems involving the perimeter and area of rectangles with whole-number side lengths using a visual model. |

Name |
Description |

Area of a Butterfly Garden | Students are asked to find the areas of two rectangular figures and are observed to determine if they use multiplication. |

Name |
Description |

Best Vegetable Garden | The students will plan a vegetable garden, deciding which kinds of vegetables to plant, how many plants of each kind will fit, and where each plant will be planted in a fixed-area garden design. Then they will revise their design based on new garden dimensions and additional plant options. Students will explore the concept of area to plan their garden and they will practice solving 1 and 2-step real-world problems using the four operations to develop their ideas. Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. Click here to learn more about MEAs and how they can transform your classroom. |

Same Perimeter, Different Area | In this lesson, students are presented with a problem that requires them to create rectangles with the same perimeter but different areas. Students also search for relationships among the perimeters and areas of different rectangles and find which characteristics produce a rectangle with the greatest area. |

Bre and Brent the Builders | The students will be able to use prior knowledge of the concept of area to relate area to multiplication and discover the formula: base x height. Students will practice by composing two-dimensional squares and rectangles and apply the area formula to build a birdhouse. |

Name |
Description |

Planning My Garden Using Perimeter | Plan some gardens by applying what you learn about perimeter in this interactive tutorial. |

Golden Gardening Girls: An Area Adventure | Explore the relationships between tiling an area, multiplication arrays and calculating area using a formula in this interactive tutorial. |

Name |
Description |

Planning My Garden Using Perimeter: | Plan some gardens by applying what you learn about perimeter in this interactive tutorial. |

Golden Gardening Girls: An Area Adventure: | Explore the relationships between tiling an area, multiplication arrays and calculating area using a formula in this interactive tutorial. |