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Using Math Games To Help Chilren Learn Math!
Squash That Box
Grades 4-5
Ever
notice what happens when you flatten cereal boxes, tin cans, or other
3-dimensional shapes for recycling? Or do you ever wonder how they
design and make all those interesting containers you find in the
department store? Mathematicians call the flat, unfolded designs of
3-dimensional shapes "nets."
What you'll need
Small cardboard boxes, aluminum cans, and cardboard tubes from toilet paper or paper towels
What to do
- Explain to your child that when we recycle materials, we need to
flatten them. Ask him or her why (to save space). Ask your child to
imagine what shapes will be created when you flatten the boxes or cans.
Some people crush cans, which is not the same as flattening. When you
take apart a cylinder, you have two circles for the ends and the flat
cylinder makes a rectangle. Cut a cardboard tube lengthwise. What shape
do you see (a rectangle)? What will a cereal box look like if you
carefully unfold it and cut along the edges?
- Unfold a
cardboard box, without showing your child the original box. Ask your
child to imagine what the original box looked like. What shape will it
be when it is put back together? How will the ends look?
- Have your child trace all the faces of a box or other
3-dimensional shapes by laying every side and top and bottom on the
paper to be traced. Ask the child the names of the drawn 2-dimensional
shapes.
- Have your child study a box. Then see if your
child can draw a net (the unfolded version) of the box. Unfold the box
to see how closely the drawn net corresponds to the actual net. What
would the net of a pyramid look like? What would the net of a cube look
like?
| Parent Pointer |
 | Recognizing
2-dimensional shapes in 3-dimensional objects and visualizing shapes
are essential skills in fields as varied as architecture,
manufacturing, medicine, and design. |
Simply Symmetrical
Grades 1-5
What you'll need
Paper, pencil, marker or crayon, magazine pictures, scissors, and glue What to do
- Explore your house for symmetrical designs. See how many your
child can find. Look at wallpaper, floor tiles, pictures, bedspreads,
and appliances.
- Cut out a magazine picture that is
symmetrical. Cut it along the line of symmetry. Paste one half of the
picture on the paper. Have your child draw the missing half.
-
Write your child's name in big block letters, then write your name.
Which name has more letters with lines of symmetry? How many letters
have one line of symmetry? How many of each letter have two? (a B has
one line, an H has two). Does anyone have a name with all symmetrical
letters? (BOB is one.) Can any letter be turned upside down and still
look the same? (YesH, I, O, S, and X are symmetrical around a center
point.) Go through the alphabet, making a list of the letters that look
the same on both sides and those that look different.
-
Fold a sheet of paper in half lengthwise. Have your child draw half of
a circle, heart, or butterfly from top to bottom along the fold on each
side of the paper. Help your child cut out the shapes that were drawn.
Unfold the paper to see the symmetrical figure. Have your child color
and glue the full figure on another sheet of paper to display the
design.
| Parent Pointer |
 | A
shape can be symmetrical when two parts of it are exactly alike. This
exercise helps young children develop an understanding of symmetry and
a sense of geometric patterns. |
Tracking Time
Grades 2-5
What you'll need
Clock or watch, newspaper, blank paper, and graph paper (can be hand-drawn) What to do
- Together with your child, keep track of the time he or she spends
watching television as well as doing homework. Make a table listing the
7 days of 1 week. Keep two columns, one for television and one for
homework. At the end of the week, see if together you can make a graph
comparing the two different activity columns.
- While watching television, make a chart showing how much time
in every hour is used for commercials compared to how much time is used
for the actual show. Do this for every half-hour of television you
watch. Then make a bar or pie chart showing the two amounts. Time the
minutes carefully.
- Together with your child, keep track
of how he or she spends time in one 24-hour period: time spent
sleeping, eating, playing, reading, and going to school. Measure a
strip of paper that is 24 inches long. Let each inch represent 1 hour.
Color in the number of hours for each activity, using a different color
for each activity. When finished, make the strip into a circle and
place it on a blank piece of paper. Trace around the circle. Then make
lines from the center of the circle to the end of each color. Your
child has just made a circle (pie) chart of how he or she spends 24
hours. Compare this with how other people in your family spend their
time.
| Parent Pointer |
 | Statistics includes collecting information, analyzing it, and describing or presenting the findings in an organized way. |
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