Authentic Lessons for 21st Century Learning

Party of Properties

Commutative, Associative and Distributive Properties

Laura Young, Erin Finley

  • Grade Level Grade Level 6th, 7th, 8th
  • Subject Subject Mathematics
  • Course Course Middle School Mathematics

Summary

This lesson gives students a real-world view on how an event coordinator uses commutative, associative, and distributive properties in their job. By the end of the lesson, students will be able to simplify expressions using these properties and apply that knowledge to real-world scenarios.

Essential Question(s)

How do the commutative, associative, and distributive properties in math help us solve problems more easily?

Snapshot

Engage Students will read statements about the order of operations and determine if they are always, sometimes, or never true.

Explore Students will investigate the order of operations with a partner.

Explain Students will examine the rules of commutative, associative, and distributive properties to solidify their understanding.

Extend Students will watch an ICAP video about using commutative, associative, and distributive properties as an event coordinator, then respond by analyzing a real-life scenario and creating an expression to solve their problem.

Evaluate Students will participate in Blooket activity to assess their learning.

Materials

  • Lesson Slides (attached) 

  • Dice (one per student)

  • Operation Testing handout (attached; one per student)

  • Guided Notes handout (attached; one per student)

  • Guided Notes-Teacher’s Guide (attached)

  • Blank paper (one per student)

  • Planning Scenarios handout (attached; one per group)

  • Planning Scenarios- Teacher’s Guide (attached)

  • Party of Properties CSV document (attached)

  • Pen/Pencil 

  • Internet capable device

Engage

Use the attached Lesson Slides to guide the lesson.  Begin by introducing the title on slide 2. Review the Essential Question on slide 3, and the Lesson Objective on slide 4. Move to slide 5 and direct students to use the instructional strategy Always, Sometimes, or Never True to respond to the prompts on the following slides. Ask students to respond to each prompt by deciding if it is always true, sometimes true, or never true. Show slides 6-11 to display each of the prompts. Allow students time to reach their decision to each prompt, then ask students to share their responses with the class.

While students discuss slides 6-11, do not correct or redirect students. They will take time to test each of these statements during the Explore portion and revisit the strategy after the next activity.

Explore

20 Minute(s)

Instruct students to form partner groups . Distribute the Operation Testing handout (attached) and one die. Display slide 12. For the front side (Side A) of the handout, instruct students to roll the die once for each blank on the first expression (twice total) and then show the solution below it. To the right side of the arrow, have students reverse the order of the rolled numbers to see if the solution remains the same with reversed numbers in the expression. If the answers are the equivalent, have students check the box next to the expressions.

Example:

As students begin to finish Side A of the handout, display slide 13 to show the instructions for Side B. Instruct students to roll the die once for each blank in the expression (three times total) and then show the solution below it. To the right side of the arrow, have students re-record each number in the first three blanks and find the new solution. If the answers are the equivalent, have students check the box next to the expressions.

Example:

Allow students 10-15 minutes to complete the handout.

After students finish the Operation Testing handout, revisit the Always, Sometimes, Never True statements on slides 14-20. Have students use the operations they tested to discuss each prompt.

Explain

20 Minute(s)

Display slide 21 and distribute Guided Notes handout (attached).

Direct students to fill in each section of the handout as you discuss it. 

Display slide 22. Using Side A of the Operation Testing handout as a guide, have students determine which operations remained equivalent regardless of the order of the numbers. Direct your students' attention back to their Guided Notes handout. Ask students to reflect on Side A of the Operation Testing handout and discuss what they think the rule for the associative property might be. When the students are done discussing, complete the rest of the commutative property section of the notes with your students taking time to clear up any misconceptions and answer questions as they work.

On slide 24, discuss with students what they would do first to simplify the expression on the screen. As students share their first step, prompt them to share why that is what they would do first. Transition to slide 25 and repeat the discussion. Direct your students' attention back to their Guided Notes handout. Ask students to reflect on the last two slides and discuss what they think the rule for the associative property might be. When the students are done discussing, complete the rest of the associative property section of the notes taking time to clear up any misconceptions and answer questions as they work.

On slide 27, discuss with students what they would do to simplify the expression on the screen. After students finish discussing, transition to slide 28. Have the students identify what is different in this expression versus the previous expression. Then, ask them to try to simplify. If students seem stuck, transition back to the previous slide to see if they could simplify that expression differently. Direct your students' attention back to their Guided Notes handout. Ask students to reflect on the last two slides and discuss what they think the rule for the distributive property might be. When the students are done discussing,  complete the rest of the distributive property section of the notes with your students, taking time to clear up any misconceptions and answer questions as they work.

Extend

Ask students to take out a blank piece of paper. Display slide 30. Introduce the instructional strategy First Word, Last Word.  Using their blank sheet of paper, ask students to write down one word they think of in relation to the occupation: “event coordinator”.  Allow students a few minutes to write down their word. Move to slide 31 and play the ICAP video on the slide: “K20 ICAP - Event Coordinator - Party of Properties”.

Once the video has ended, display slide 32 and direct students to revisit the instructional strategy First Word, Last Word to write a new word they associate with the occupation: “event coordinator”. Ask students to share their words with a partner or with the class.

Group students in pairs or groups of three or four. Distribute the Planning Scenario handout(attached). Transition to slide 33. Direct students to review their event scenario. As they review, direct students to identify important information that will help them determine what the needed outcome of the scenario is. Remind them to use their Operation Testing handout and Guided Notes handout for reference. Have students create the expression that represents the scenario and determine which property best fits their expression. After all groups have completed their handout, ask for groups to share their results with the class. Use the Planning Scenarios-Teacher’s Guide (attached) to help assess students’ answers.

Evaluate

10 Minute(s)

Display slide 34. Direct students to use their internet device to log into Blooket by navigating to play.blooket.com. Provide them with the game ID to join. Direct students to complete the Blooket activity. 

When students have completed the Blooket activity, move to slide 35. Direct students to take out pencil and simplify the displayed expressions using what they have learned on the same paper they used for their First Word Last Word activity. Direct students to turn their paper in as their Exit Ticket before leaving.

Resources