Exploring Arrays

Grade Level:

3rd Grade (Tier 3 students)

Duration:

30 minutes

Objective:

• Students will understand the concept of arrays as an arrangement of objects in rows and columns.
• Students will be able to create and interpret arrays with guidance.
• Students will connect arrays to multiplication concepts.

Common Core Standards Alignment:

• CCSS.MATH.CONTENT.3.OA.A.1: Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each.
• CCSS.MATH.CONTENT.3.OA.C.7: Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false.

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Success Criteria (I can... statements):

• I can explain what an array is using rows and columns.
• I can create arrays to show equal groups.
• I can count the total number of objects in an array.
• I can describe an array in terms of rows and columns.

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Materials Needed:

• Large grid paper (dyslexia-friendly: use colored grid lines in alternating soft pastel colors)
• Colored counters or small objects (buttons, cubes)
• Whiteboard and markers
• Visual aids with simple, clear fonts (Comic Sans or Open Dyslexic font recommended)
• Manipulative trays to keep counters organized

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Lesson Breakdown:

1. Introduction to Arrays (7 minutes)

• Use simple language and clear visuals.
• Show a picture of a garden with rows of flowers.
• Explain: "An array is a way to arrange things in rows and columns."
• Use the whiteboard to draw a 2 rows x 3 columns array.
• Dyslexia-friendly tip: Use bold, large print with contrasting colors.
• Ask: "How many flowers do you see?" Count together (2 rows × 3 columns = 6 flowers).

I can statement: I can explain what an array is using rows and columns.

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2. Guided Practice: Build Your Own Array (10 minutes)

• Give each student a piece of grid paper and 12 colored counters.
• First, model building a 3 rows × 4 columns array.
• Ask students to replicate the array using their counters.
• Guide them one-on-one adjusting for understanding.
• Once done, count total counters together.
• Ask students to describe their array: "How many rows? How many in each row?"

Differentiation:

• For the Tier 3 students, encourage the use of physical counters to support tactile learning.
• Use consistent and simple phrases and repeat instructions.
• Give step-by-step verbal prompts.

I can statement: I can create arrays to show equal groups.

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3. Independent Practice: Create Your Array (8 minutes)

• Ask students to choose a number between 6 and 12.
• Have them use counters to create their own array representing that number.
• Encourage drawing their array on the grid paper.
• Have each student explain their array to the partner or teacher:
  • "I made ___ rows with ___ in each row."
  • "There are ___ counters in my array."

Extension Activity for Advanced Learners:

• Challenge to find more than one way to make arrays for their chosen number.
• Write the multiplication sentence for each array.

I can statement: I can count the total number of objects in an array.

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4. Wrap-Up and Review (5 minutes)

• Discuss how arrays help with counting and multiplication.
• Draw a few arrays on the board and ask students to describe them.
• Affirm learning with praise and visual thumbs-up or check marks.

Success Criteria Check:

• Can the students explain an array?
• Can they build and describe arrays?
• Provide immediate feedback.

I can statement: I can describe an array in terms of rows and columns.

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Differentiation Strategies:

• For students with dyslexia or reading difficulties:
  • Use dyslexia-friendly fonts and coloured paper.
  • Provide verbal instructions repeatedly.
  • Use manipulatives to anchor abstract concepts.
• For English Language Learners:
  • Use gesture and pictures alongside verbal explanations.
  • Encourage peer support.
• For students needing additional support:
  • Simplify tasks, e.g., build only with 2-3 rows.
  • Give extra practice with counting in small groups.

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Assessment:

• Observe students as they build and describe their arrays.
• Use simple exit questions:
  • "What is an array?"
  • "How many rows and columns are in your array?"
• Review students’ drawn arrays for accuracy.
• Provide positive corrective feedback immediately.

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Notes to Teacher:

• Keep language clear and simple, with repetition.
• Use hands-on objects extensively — arrays are easier to grasp tactilely.
• Reinforce the concept that multiplication is repeated addition by using arrays.
• Praise effort and encourage curiosity by asking questions like, “Can we make this array bigger?”

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This lesson plan balances hands-on learning, verbal explanation, multisensory approaches, and visual supports aligned to CCSS math standards, while also addressing different learning needs, making it perfect for Tier 3 students in Grade 3.