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Foundations of Mathematical Thinking · Junior Infants

Active learning ideas

Time: Units and Conversions

Active learning builds strong foundations in time concepts by connecting abstract numbers to concrete experiences. Young learners anchor time units to their own bodies, classroom tools, and daily routines, making relationships between seconds, minutes, and hours tangible. Movement, rhythm, and hands-on materials turn counting into a shared, memorable process.

NCCA Curriculum SpecificationsNCCA: Junior Cycle - Strand 3: Measurement - M.1.8
20–35 minPairs → Whole Class4 activities

Activity 01

Stations Rotation30 min · Whole Class

Whole Class: Time Rhythm Chant

Gather students in a circle. Chant and clap 60 seconds to feel a minute, pat knees 60 times for another minute to make an hour. Act out a day: wake, eat, play, sleep, noting hours. Review conversions with finger counts.

Explain the relationships between different units of time.

Facilitation TipDuring the Time Rhythm Chant, model the beat with a drum or tambourine so students can match the steady pulse.

What to look forHold up a sand timer for 30 seconds and ask students to clap. Then ask: 'How many more claps until one minute is finished?' Guide them to count the remaining seconds.

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Activity 02

Stations Rotation25 min · Pairs

Pairs: Egg Timer Races

Give pairs an egg timer. Race to hop, draw a smiley, or stack blocks in one minute. Flip twice for two minutes, count total. Pairs share: 'Two minutes is how many from recess?'

Analyze how time conversions are used in daily life and scheduling.

Facilitation TipFor Egg Timer Races, set a clear finish line or signal for each pair to stop their timer, preventing overrunning.

What to look forShow a picture of a clock face. Ask: 'If it is 9 o'clock now, what time will it be in one hour?' Discuss how many minutes are in that hour and how that relates to the clock's hands.

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Activity 03

Stations Rotation35 min · Small Groups

Small Groups: Calendar Builders

Provide large calendars. Groups add weather stickers for each day, count to seven for a week. Predict days to Friday, convert weeks to class days. Discuss birthdays in months.

Construct a multi-step problem that requires converting between several units of time.

Facilitation TipIn Calendar Builders, assign roles like 'page flippers' and 'counter checkers' to keep every child engaged.

What to look forGive each student a card with a simple time conversion question, such as 'How many days are in one week?' or 'How many minutes are in one hour?'. Students write or draw their answer.

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Activity 04

Stations Rotation20 min · Individual

Individual: My Day Clock

Each child gets a paper clock and timeline strip. Draw and set hands for wake-up, snack, home time. Label hours, count minutes for play. Share one conversion with neighbor.

Explain the relationships between different units of time.

Facilitation TipFor My Day Clock, provide pre-cut clock faces with movable hands to help students visualize time as a cycle.

What to look forHold up a sand timer for 30 seconds and ask students to clap. Then ask: 'How many more claps until one minute is finished?' Guide them to count the remaining seconds.

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Templates

Templates that pair with these Foundations of Mathematical Thinking activities

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A few notes on teaching this unit

Teacher modeling matters more than worksheets for young learners. Use the classroom clock, real calendars, and personal timers to show time as a tangible resource. Avoid abstract explanations like '60 seconds pass'—instead, have students feel 60 claps or watch sand fall. Repetition through songs, chants, and physical routines strengthens memory, while journaling connects school time to home life. Research shows that children grasp time best when they connect units to familiar events and their own bodies.

Successful learning shows when students confidently use time vocabulary to describe routines and convert between units in real contexts. They should explain relationships like '60 seconds make a minute' and apply this to classroom jobs, calendar tasks, or personal schedules. Clear evidence appears in their speech, gestures, and completed materials.


Watch Out for These Misconceptions

  • During Egg Timer Races, watch for students counting claps as second markers instead of feeling the full 60 seconds.

    After Egg Timer Races, gather pairs to recount their 60-second intervals aloud, using the timer’s emptying sand or a slow clap to reinforce the full minute. Guide them to tally each completed count on a whiteboard.

  • During Time Rhythm Chant, some students may assume the chant’s rhythm matches school hours, thinking a 'rhythm beat' equals a whole hour.

    During Time Rhythm Chant, hold up a clock at different points in the chant to show how many beats fit into one minute, then one hour. Link each beat to a real event like lining up or tidying.

  • During Calendar Builders, students may assume all months have 30 days because February feels shorter.

    During Calendar Builders, ask groups to line up counters for each month’s days, comparing lengths visually. Highlight February’s unique count and have students mark it with a star.


Methods used in this brief