for Hat Day
students will measure the circumference of their heads and
compare the measurement to other objects in the classroom.
- Cloth measuring tapes or
pieces of string and straight rulers
- A variety of spherical
objects placed around the room. For example,
balls, pieces of fruit, a globe, etc. (Try and
have some objects bigger than their heads and some
- Ask the students how they
could measure their heads to be fitted for a new
hat. Have a discussion on the words
circumference and sphere. Demonstrate how to
measure their heads using either the cloth measuring
tapes or the string and rulers.
- Pass out the My
Head Worksheet and put the students in
pairs. Have them help each other in measuring
the circumference of their heads.
- Once they have a
measurement, or a piece of string cut to the size of
their heads, have them complete the worksheet.
This will be done by having them locate the other
spherical objects that have been placed around the
room and measuring those objects.
- Older students may be
challenged to figure how much bigger or smaller the
objects are than their heads.
- Make a real graph for the
hats brought in to school. Have the students
decide which features they will use to graph the
hats. For example, by color, type of hat, size
of hat, etc.
- Read the book, "Caps
for Sale" by Esphyr Slobodkina. Have the
students create their own patterns by coloring
different caps. They may also make a stack of
different colored caps and write math problems to
accompany their stacks. For example 3 red caps +
2 blue caps + 3 green caps = 8 caps.