3rd Grade  Project 1 week

Multiply Magic: Unlocking Math Powers

JMassey2
Updated
CCSS.Math.Content.3.OA.B.5
CCSS.Math.Content.3.OA.C.7
CCSS.Math.Content.3.NBT.A.3
CCSS.Math.Content.3.OA.D.9
CCSS.Math.Content.3.OA.A.3
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Purpose

Students will build on addition to strengthen their understanding and fluency with multiplication and division within 100. Through hands-on equal-group, array, and measurement challenges, they will apply operation properties, identify arithmetic patterns, and explain their strategies. Students will also use place value to multiply one-digit numbers by multiples of 10 while demonstrating their current comfort with multiplication through models, equations, and real-world problem solving.

Learning goals

Students will connect repeated addition to multiplication and identify their current confidence and fluency with multiplication facts. They will use operation properties, place value, arrays, equal groups, and fact families to multiply and divide within 100 and solve real-world problems. Students will multiply one-digit numbers by multiples of 10 and explain patterns in multiplication tables using operation properties. By the end of the unit, students will demonstrate increased accuracy, flexibility, and fluency with one-digit multiplication facts.

Standards
  • [Common Core] CCSS.Math.Content.3.OA.B.5 - Apply properties of operations as strategies to multiply and divide.
  • [Common Core] CCSS.Math.Content.3.OA.C.7 - Fluently multiply and divide within 100, using strategies such as the relationship between multiplication and division (e.g., knowing that 8 × 5 = 40, one knows 40 ÷ 5 = 8) or properties of operations. By the end of Grade 3, know from memory all products of two one-digit numbers.
  • [Common Core] CCSS.Math.Content.3.NBT.A.3 - Multiply one-digit whole numbers by multiples of 10 in the range 10—90 (e.g., 9 × 80, 5 × 60) using strategies based on place value and properties of operations.
  • [Common Core] CCSS.Math.Content.3.OA.D.9 - Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations.
  • [Common Core] CCSS.Math.Content.3.OA.A.3 - Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.
Competencies
  • Academically Prepared - Demonstrates a strong foundation in the New York State learning standards and is equipped with the knowledge and skills necessary to achieve success in college, careers, civic engagement, service, and life.

Products

Students will create an initial array model and repeated-addition explanation to show their current understanding and comfort with multiplication. Throughout the week, they will build a strategy collection featuring equal groups, arrays, fact families, operation properties, multiplication patterns, and one-digit numbers multiplied by multiples of 10. For the final product, students will design and share a “Multiplication Challenge” with real-world word problems, visual models, equations, solutions, and explanations of efficient strategies.

Launch

Present a “School Supply Packing Challenge” in which teams organize counters into equal groups and arrays for several pretend classroom orders. Students represent each order with repeated addition, a multiplication equation, and a drawing, then explain patterns or properties they notice. Include optional challenge orders with one-digit factors and multiples of 10, such as 4 × 20. Close with a strategy gallery walk while the teacher notes students’ addition understanding, multiplication strategies, and current comfort level.

Exhibition

Host a “Multiplication Strategy Museum” where students display a real-world word problem, an array or equal-groups model, and equations showing how repeated addition connects to multiplication and division. Each student explains a strategy using an operation property, identifies a multiplication-table pattern, and demonstrates multiplying a one-digit number by a multiple of 10. Visitors solve one student-created challenge and leave specific feedback about which representation made the reasoning clear. End with a brief student reflection comparing their comfort with multiplication before and after the project.