Number Structure Check

Overview

A 20-minute wrap-up session to check Year 2 understanding of place value and number structure after a learning unit. With two students, the teacher can listen closely to explanations, identify gaps quickly, and choose an immediate follow-up focus.

Learning intentions

• WALT represent and read two-digit numbers.
• WALT explain the value of each digit in a number.
• WALT partition, compare and order numbers.
• WALT use mathematical language to explain our thinking.

Success criteria

• I can show a two-digit number with equipment, drawings or words.
• I can explain what each digit is worth.
• I can partition a number in more than one way.
• I can compare two numbers and explain which is greater or less.

Curriculum links

• Number — understanding place value and the structure of two-digit numbers.
• Number — representing, reading, partitioning, comparing and ordering numbers.
• Mathematics and Statistics — Mathsteasers: using higher-order thinking questions to deepen mathematical understanding.
• Mathematics and Statistics — Mathsteasers / Alignment: connecting challenge questions with relevant mathematical learning.

Lesson structure (20 minutes)

1. 0–3 min · Warm-up and purpose. Open with the number mystery introduction and tell students, “Today we are showing what we know and explaining how we know it.” Display 34 and ask: “What can you tell me about this number?” Students each share one idea, such as “It has 3 tens” or “It is 30 and 4.”

2. 3–8 min · Place-value check. Use the place-value check and give each student access to tens and ones materials or drawn place-value columns. Show 47, 62 and 90 one at a time; students build, draw or describe each number, then state the value of each digit. Ask follow-up questions: “How do you know?” “What would change if I moved the 6?” Record misconceptions without interrupting the flow.

3. 8–13 min · Partition and regroup. Distribute the number structure check sheet. Students complete the short tasks: partition 58 into tens and ones, write a number represented by drawings, and find two ways to make 43. Encourage flexible thinking, for example 4 tens and 3 ones, or 3 tens and 13 ones. Students explain one answer aloud to the teacher and each other.

4. 13–17 min · Compare and reason. Return to the compare-and-explain challenge. Present pairs such as 36 and 63, then 50 and 49. Students use the worksheet or equipment to decide which number is greater, less or equal and explain their decision using “greater than”, “less than”, “equal to”, “tens” and “ones”. Ask: “Is the number with more ones always greater? Prove or disprove it.”

5. 17–20 min · Plenary and next step. Show the final reflection prompt. Each student completes the final worksheet item: draw or write a number that has 5 tens and fewer than 4 ones, then explain it. Ask each student to finish the sentence, “I am confident with …” or “I need more practice with …” Use their responses to choose the next teaching step.

Resources

• the number structure wrap-up deck
• the number structure check sheet
• Tens and ones blocks, bundled sticks or place-value counters
• Place-value mat with tens and ones columns
• Pencils and erasers
• Optional mini-whiteboards and pens
• Visible timer

Assessment

• Listen for accurate use of “tens”, “ones”, “value”, “greater”, “less” and “equal”.
• Observe whether students can represent numbers without copying a model and whether they can explain the reasoning behind an answer.
• Use the final worksheet item and student reflections to group the next learning need: secure understanding, further practice with partitioning, or targeted support with tens and ones.

Differentiation

• Support learners with concrete tens and ones materials, a labelled place-value mat, enlarged numerals and oral rehearsal before writing. Accept drawing, pointing, building or explaining verbally as valid demonstrations of understanding.
• Use one number at a time, read all worksheet instructions aloud, and cover unused questions to reduce visual load. Provide dyslexia-friendly options: a clear sans-serif font, large spacing, uncluttered pages, minimal text and the choice to answer orally.
• For students working below expected level, begin with numbers below 50 and provide the sentence frame: “___ has ___ tens and ___ ones, so its value is ___.”
• Extension: ask an advanced learner to find three different partitions of 62, create a number that is greater than 45 but less than 50, or explain why 39 is less than 42 even though it has more ones.