Step Into Measurement: A Fun and Hands-on Way to Introduce Length for Kindergarten!
I can’t wait to share this engaging activity for introducing length! I look forward to our Measurement unit every year! There is a unique kind of magic in an early years classroom when students get to take off their shoes and use toys to “do math.” In Kindergarten, Foundation, and Prep, the transition from play-based exploration to formal mathematical concepts is a big leap. Introducing length through informal (non-standard) units is the perfect bridge, allowing students to grasp the concept of “how long” without the abstract complexity of rulers and centimetres.
One of the most highly engaging ways to introduce this is the “Measure Your Foot” challenge. It is simple, requires minimal prep, and gives students a personal connection to their data.
Introducing Measurement with Success
In this activity, students work in pairs to trace their feet and then use various classroom manipulatives, such as counting bears, blocks, and paperclips, to measure the length from heel to toe. This hands-on approach builds a foundation for spatial awareness, counting correspondence, and the principles of linear measurement.
Materials Needed
Most of these items are likely already in your math cupboards:
- Large paper for tracing
- Lead pencils and markers
- Measuring Length Posters & Teaching Slides
- Informal units: Counting bears, paperclips, counters, Unifix cubes, Lego bricks, math links, and MAB ones blocks.
- The “Measure Your Foot” Recording Sheet (Available as a free download below)
Teacher Tip – Station Rotation: If you have limited sets of certain items, set up the classroom in stations. Each table holds a different unit, and students rotate with their paper foot and recording sheet.
Step-by-Step Instructions
1. Introduce measurement
Begin by discussing the idea of measuring length. Ask students simple questions to gauge their prior knowledge, such as: “How can we find out how long something is?” or “What could we use to measure?”
This is the perfect time to introduce measurement using your teaching slides. If you use my Measuring Length Teaching Slides, they provide a visual guide for the “Top Tips for Measurement.” These simple rules make a big difference in accuracy:
- Units must be placed end to end (Start at the very edge of the heel).
- Units should not overlap (Keep them in a single layer).
- Units should not have gaps between them (Ensure they are touching).
2. Trace the Foot
Place students in pairs. One student places their foot on the paper while their partner carefully traces around the foot with a pencil. Then, students swap roles so everyone has their own foot outline. This partner task builds collaboration and gives students a clear, personal objective to measure.
3. Choose a Measuring Tool
Next, provide students with one set of informal units (for example, counters or Unifix cubes). Students place the objects along the length of their foot outline, carefully lining them up from the center of the heel to the tip of the longest toe.
As students work, have your Top Tips for Measurement posters clearly displayed. This allows you to point to the visuals while circulating the room, prompting students with questions like: “Are your cubes touching like they are in the picture?” or “Did you start right at the heel line?” Referring back to the posters ensures that students are not just playing with the manipulatives, but are accurately practising the principles of length.
4. Measure and Record
Students repeat the process using different informal units set up around the room. As they measure, students first estimate how many units they think they will need, then record the actual measurement on their sheet. This helps them discover an important idea: different-sized units create different measurement numbers.
5. Discuss the Results
Bring the class together to compare findings. Ask questions such as: “Which unit gave the biggest number?” or “Why did we need fewer counting bears than paperclips?” Students begin to understand that smaller units require more pieces to measure the same length.
Free Download: Get Your Recording Sheet
To make this lesson even easier to implement, you can download the Free “Measure Your Foot” Recording Sheet.
The download includes a version with the units already listed (matching the ones mentioned above) and a blank version where you can type in the specific informal units you have available in your classroom.
Further Resources
If you are looking for more ways to brighten your math block, the full Measurement Length Posters & Teaching Slides provide a comprehensive set of visuals and interactive prompts designed specifically for the Foundation curriculum.
For students ready to progress further, you might also enjoy my Measurement Practice Centers. These centres bridge the gap between informal units and formal units like centimetres and inches with engaging, no-prep printables.
