Mathematics
Beginner
50 mins
Teacher/Student led
+80 XP
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One Whole, Ten Parts: Introducing Tenths

Introduce tenths as one of ten equal parts of a whole. Explore how ten tenths make one whole, just as ten units make one ten. Shade fraction strips to represent and name different tenths.

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    1 - Getting Started

    Illustration for Getting StartedImagine we ordered one big pizza to share fairly between all ten of us. How much of the whole pizza does each person get? What would we call each of those equal slices?

    Today we meet a new word for that share. We call it a tenth.

    2 - Watch and Notice

    Watch the two fraction strips on the board.

    First, look at one whole strip beside ten tenths. Ten tenth-strips line up exactly underneath the whole strip — they cover it from end to end with no gap.

    Now look at the same one whole strip beside two halves. Two half-strips also cover it exactly.

    Ten tenths make one whole. Two halves make one whole. The whole hasn't changed — we've just cut it into a different number of equal parts.

    3 - Try It Together

    We have one whole strip on top and ten tenth-strips below. I will call out a tenths fraction — like 'shade three-tenths' — and one of you will come up to the board to shade it.

    While your classmate is at the board, watch the strip carefully. After the shading, thumbs up if you agree, thumbs sideways if you'd change something. Then we read the answer together: 'three of ten parts shaded — three-tenths.'

    Tenths on the strip

    4 - Sketch the Tenths in Your Copy

    COPYBOOK MOMENT

    In your maths copy, sketch four long rectangles. Divide each one into ten equal parts using your ruler. Then shade each rectangle to show a different tenths fraction and label it underneath:

    • 1/10
    • 3/10
    • 6/10
    • 7/10

    Read each one aloud to yourself as you finish it: one-tenth, three-tenths, six-tenths, seven-tenths.

    5 - Class Challenge

    Time for our challenge bank — four problems on the board, getting harder. One of you comes up to shade each one, and the activity tells us ✓ or 'not yet' after Check.

    The bank: one-tenth, three-tenths, seven-tenths, and a stretch problem — shade more than half but less than seven-tenths.

    While someone works at the board, watch the strip carefully. After Check, thumbs up if it's right, thumbs sideways if we need to try again.

    Shade the tenths

    Pupil practice
    Module 1 · Number: Place Value, Negative Numbers and Order of Operations Number
    Lesson 2 · One Whole, Ten Parts: Introducing Tenths
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