Understand that a figure does not change in a symmetrical rotation, the only change is positional.
Identify the center point of a shape.
Rotate a given figure at 90-degree intervals around its center point.
Understand that a shape has rotational symmetry if it can be turned less than 360 degrees and look exactly like the original.
Center, Rotational Symmetry, Rotate
- discussed and sorted shapes by whether they had rotational symmetry or not
- drew shapes or pictures that have rotational symmetry
- designed a snowflake or circle to show rotational symmetry
Can you find any objects in your home that have rotational symmetry?
You can rotate the objects to check if they look the same at any point when they are rotated up to 360 degrees.
Measure and compare objects in standard units.
Understand how to measure length using a standard unit (centimeter, inches).
Measure the length of objects by selecting appropriate measurement tools.
Estimate length based on understandings of unit measurements.
Identify that length can be measure with rulers, tape measures, etc.
Length, Inches, Estimate, Ruler
- used a ruler to measure and cut strips of paper to given lengths to create a 3D rainbow
- estimated the length of objects in inches
- measured the length of objects in inches