Counting to 100 by Ones and TensActivities & Teaching Strategies
Active learning turns abstract counting into concrete movement and visual patterns, which strengthens memory and reasoning for young learners. Counting to 100 by ones and tens requires both auditory rhythm and spatial awareness, supported best through kinesthetic and visual engagement.
Learning Objectives
- 1Count to 100 by ones, identifying the next number in a sequence.
- 2Count to 100 by tens, identifying the next number in a sequence.
- 3Compare the process of counting by ones versus counting by tens to reach 100.
- 4Explain why counting by tens is more efficient for large quantities.
- 5Predict the next number when counting by tens from a given number up to 100.
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Whole Class: Count and Move
Students stand in a circle and count by ones to 100, each student saying the next number and stepping to the right. On every tenth number, the whole class claps loudly. After reaching 100, repeat counting only the clap numbers (10, 20, 30...) to make the tens pattern explicit through movement and sound.
Prepare & details
Compare counting by ones to counting by tens to 100.
Facilitation Tip: During Count and Move, have students stomp or clap for each count to reinforce the rhythm of counting by ones and tens.
Setup: Tables/desks arranged in 4-6 distinct stations around room
Materials: Station instruction cards, Different materials per station, Rotation timer
Stations Rotation: Hundreds Chart Mysteries
Cover several numbers on a printed hundreds chart with sticky notes. Students work in small groups to figure out the hidden numbers using the patterns visible in uncovered rows and columns. Groups record their answers and reasoning before removing the sticky notes to check.
Prepare & details
Explain the advantage of counting by tens when counting a large group of objects.
Setup: Tables/desks arranged in 4-6 distinct stations around room
Materials: Station instruction cards, Different materials per station, Rotation timer
Think-Pair-Share: Ones or Tens?
Present a jar of 40 small objects. Ask partners to predict which would be faster: counting by ones or by tens? Both methods are then tried with the actual objects. Pairs compare the experience and discuss when counting by tens is more useful than counting by ones.
Prepare & details
Predict the next number when counting by tens from 30.
Setup: Standard classroom seating; students turn to a neighbor
Materials: Discussion prompt (projected or printed), Optional: recording sheet for pairs
Gallery Walk: Pattern Posters
Post strips of paper showing the counting-by-tens sequence (10, 20, 30...) with several numbers covered. Students walk through, fill in missing numbers, and add one pattern observation: what do all these numbers have in common? Discuss observations as a class at the end.
Prepare & details
Compare counting by ones to counting by tens to 100.
Setup: Wall space or tables arranged around room perimeter
Materials: Large paper/poster boards, Markers, Sticky notes for feedback
Teaching This Topic
Teach counting by ones first to build a strong linear foundation, then introduce counting by tens as a pattern within that sequence. Avoid rushing past decade transitions—these require explicit practice and visual anchoring. Research shows that pairing movement with counting improves retention and number sense in kindergarteners.
What to Expect
Students will count accurately to 100 by ones and by tens, recognizing the relationship between the two sequences and the decade transitions. They will also explain why counting by tens is efficient and how it relates to place value.
These activities are a starting point. A full mission is the experience.
- Complete facilitation script with teacher dialogue
- Printable student materials, ready for class
- Differentiation strategies for every learner
Watch Out for These Misconceptions
Common MisconceptionDuring Hundreds Chart Mysteries, watch for students who can recite the tens sequence but cannot point to or identify the corresponding numbers on the hundreds chart.
What to Teach Instead
Have students use a hundreds chart to physically circle or highlight each multiple of ten as they chant, ensuring each step in the chant matches a visual representation.
Common MisconceptionDuring Count and Move, watch for students who say the tens sequence quickly without a sense of the value of each number.
What to Teach Instead
Pause after each group of ten and ask, 'How many groups of ten have we counted so far?' to connect the chant to the quantity it represents.
Common MisconceptionDuring Gallery Walk: Pattern Posters, watch for students who do not see the relationship between the ones and tens sequences when comparing the posters side by side.
What to Teach Instead
Ask students to trace with their fingers the path from 30 to 40 on the ones poster and then the tens poster, explicitly naming the numbers they pass to highlight the embedded tens.
Assessment Ideas
After Hundreds Chart Mysteries, provide students with a blank hundreds chart. Ask them to color the numbers when counting by ones up to 20, then circle the numbers when counting by tens up to 100.
During Think-Pair-Share: Ones or Tens?, present students with a scenario: 'Imagine you have 50 toy cars to count. Would it be faster to count them one by one, or to count them in groups of ten? Explain why.' Listen for student reasoning about efficiency.
After Count and Move, give each student a card with a starting number (e.g., 30). Ask them to write the next three numbers when counting by tens, then the next three numbers when counting by ones.
Extensions & Scaffolding
- Challenge students who finish early to count backward by tens from 100 using a set of ten-frame cards.
- For students who struggle, provide a number line that highlights multiples of ten in a different color to scaffold transitions.
- Deeper exploration: Ask students to create their own counting song or chant that includes both counting by ones and tens within the same verse.
Key Vocabulary
| Count by ones | To say or list numbers in sequential order, increasing by one each time, such as 1, 2, 3. |
| Count by tens | To say or list numbers in a skip-counting pattern, increasing by ten each time, such as 10, 20, 30. |
| Hundreds chart | A grid showing numbers from 1 to 100, arranged in rows and columns, which helps visualize number patterns. |
| Sequence | A set of numbers that follow a specific order or pattern. |
Suggested Methodologies
Planning templates for Mathematics
5E Model
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RubricMath Rubric
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