Finding Possibilities
http://illuminations.nctm.org/LessonDetail.aspx?ID=L320
A lesson plan for grade 3 English Language Arts and Mathematics
This lesson, the sixth of an eight-part unit from Illuminations titled “Multiplying Meanings,” introduces the multiplication model known as “cross products of sets.” While not commonly presented as a model for multiplication, this model proves useful to students when they solve probability problems in which they must determine all possible outcomes. In this model, multiplication can be represented in a tree diagram. The children’s book Each Orange Had Eight Slices focuses on multiplication and gives the students a model with realistic settings. The lesson closes with students writing original problems using this model.
North Carolina Curriculum Alignment
English Language Arts (2004)
Grade 3
- Goal 2: The learner will apply strategies and skills to comprehend text that is read, heard, and viewed.
- Objective 2.02: Interact with the text before, during, and after reading, listening, or viewing by:
- setting a purpose.
- previewing the text.
- making predictions.
- asking questions.
- locating information for specific purposes.
- making connections.
- using story structure and text organization to comprehend.
- Objective 2.02: Interact with the text before, during, and after reading, listening, or viewing by:
Mathematics (2004)
Grade 3
- Goal 1: Number and Operations - The learner will model, identify, and compute with whole numbers through 9,999.
- Objective 1.03: Develop fluency with multiplication from 1x1 to 12x12 and division up to two-digit by one-digit numbers using:
- Strategies for multiplying and dividing numbers.
- Estimation of products and quotients in appropriate situations.
- Relationships between operations.
- Objective 1.06: Develop flexibility in solving problems by selecting strategies and using mental computation, estimation, calculators or computers, and paper and pencil.
- Objective 1.03: Develop fluency with multiplication from 1x1 to 12x12 and division up to two-digit by one-digit numbers using:



