Attributes, units and measurement sense
- 2. Quantifiable characteristics of objects or events How to measure an ice cream cone? ◦ How long will it take me to eat it? ◦ How cold is the ice cream? ◦ Will my hand fit around the cone? ◦ How much ice cream will I need to fill the cone? These are all ways that students can measure an ice cream cone. They are attributes of an ice cream cone.
- 3. If we think about different units that can align with the attributes, we can consider: ◦ Length, width, height, depth, distance ◦ Perimeter ◦ Area ◦ Mass ◦ Capacity ◦ Volume ◦ Temperature ◦ Time These ideas connect to the different attributes that we can use to measure the ice cream cone!
- 4. Units provide us with meaning of the measurement There are two types: ◦ Standard-metric (e.g. metre) ◦ Non-standard- arbitrary units (e.g. paper clips) The need to be appropraite for the context (e.g. kilometres instead of metres for the distance between two towns).
- 5. Attribute Non-Standard Units Length Perimeter Toothpicks, straws, paper clips, markers Area Square tiles, pattern blocks, sheets of paper Mass Metal washers, marbles, cubes Capacity Cubes, scoops, plastic containers Time Sand timers, metronomes
- 6. Attribute Unit Length Perimeter Kilometre, metre, centimetre, milimetre Area Square metre, square centimetre Mass Kilogram, gram Capacity Litre, militre Volume Cubic metre, cubic centimetre Temperature Degree Celsius
- 7. What does it mean to measure? ◦ How to choose appropriate units; ◦ Understanding the ‘howmuchness’ of measurement units (e.g. a baseball ball=1 metre approximately); ◦ Understanding the measurement process (next slide) ◦ Understanding the use of measurement tools ◦ Understanding how to estimate measurements (benchmarks, personal referents, chunking)
- 8. 1. Identify the problem to be solved 2. Identify the attribute to be measured 3. Choose the appropriate unit for the attribute 4. Select and use the appropriate measurement tool or technique 5. Identify the specific measurement 6. Using the measurement to solve the problem
- 9. Ruler Pro-an app which turns your device into a scrollable ruler for use in various measurement activities SpectraRuler-an app to measure both the distance and height of an object or building (has links to real work applications) Measurement HD-game based learning app to reinfornce measurement concepts like time, weight, and volume