# CCSS.MATH.CONTENT.1.MD.A.2

Express the length of an object as a whole number of length units, by laying multiple copies of a shorter object (the length unit) end to end; understand that the length measurement of an object is the number of same-size length units that span it with no gaps or overlaps. Limit to contexts where the object being measured is spanned by a whole number of length units with no gaps or overlaps.

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### Measuring Length with Informal Units - Worksheet

A worksheet to use when learning about measuring length using informal units.

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### Open-Ended Math Problem Solving - Grades 1, 2, and 3 (PowerPoint Version)

A PowerPoint with 20 open-ended problem solving questions covering a range of mathematical concepts.

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### Open-ended Math Problem Solving - Grades 1, 2, and 3 (Task Card Version)

A set of 20 open-ended problem solving task cards covering a range of mathematical concepts.

teaching resource

### Measuring with Dinosaur Footprints - Worksheet

A worksheet to use when exploring informal units of length.

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### Measuring, Comparing, and Ordering Height – Worksheet

A worksheet to use when learning about measuring length using informal units.

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### Informal Units Rulers

A set of rulers that use different sized, informal units to measure length.

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### Length Investigation - The Longest Finger

A mathematics investigation involving length, embedded in a real-world context.

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### Let's Get Measuring with Connecting Cubes

A set of templates to use when measuring with informal units.

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### Let's Get Measuring with Paper Clips

A set of templates to use when measuring with informal units.

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### Let's Get Measuring with Counters

A set of templates to use when measuring with informal units.

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### Spin and Sort – Longer, Shorter, Same

Practice comparing lengths with this sorting activity.

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### Measuring Length with Clover Worksheet

Measure familiar objects using our lucky clover in this St Patrick’s Day math activity!

teaching resource

### Math Warm-Ups Interactive PowerPoint - Grade 1

A PowerPoint providing a series of warm-up activities for Grade 1 students across the mathematics curriculum.

lesson plan

### Assessment - Measuring Length with Informal Units

A 30 minute assessment in which students will demonstrate their knowledge and understanding of length.

lesson plan

### Measuring with Dinosaur Footprints

A 60 minute lesson in which students will measure and compare lengths of objects using informal units.

lesson plan

### Measuring and Comparing Length

A 60 minute lesson in which students will measure and compare lengths of objects using informal units.

lesson plan

### Measuring, Comparing, and Ordering Height

A 60 minute lesson in which students will measure, compare, and order height using informal units.

lesson plan

### Length Investigation - The Longest Finger

A 60 minute lesson in which students will apply knowledge and understanding of length to a real-world context.

lesson plan

### Review of Length

A 60 minute lesson in which students will review the concept of length.

unit plan

### Measuring Length with Informal Units - Unit Plan

This Mathematics unit addresses the concept of measuring, comparing and ordering length using informal units.