# Lesson 5

Squares and Circles

### Lesson Narrative

In grade 6, students applied the distributive property to produce equivalent expressions. Here, students build on that, looking for regularity in repeated reasoning (MP8) to identify and factor trinomials that are perfect squares.

Then, students rewrite perfect square trinomials in factored form to find a circle’s center. This will lead to completing the square to identify a circle’s radius and center in upcoming activities.

### Learning Goals

Teacher Facing

- Calculate and interpret trinomials in expanded and factored form in equations for circles.

### Student Facing

- Let’s see how the distributive property can relate to equations of circles.

### Learning Targets

### Student Facing

- I understand how squared binomials relate to the equation of a circle.

### CCSS Standards

Building On

Addressing

Building Towards

### Print Formatted Materials

Teachers with a valid work email address can click here to register or sign in for free access to Cool Down, Teacher Guide, and PowerPoint materials.

Student Task Statements | docx | |

Cumulative Practice Problem Set | docx | |

Cool Down | Log In | |

Teacher Guide | Log In | |

Teacher Presentation Materials | docx |