Straws and TwistTies
12042011, 03:15 PM


The ideas I am going to give you are from Everyday Math. You will need straws and twistties.
Cut straws into three lengths...four inches, six inches, and eight inches. They are easy to store...I used rectangular Rubbermaid containers like the ones you would use for leftovers. I bought the cheap ones at the dollar store.
With straws, make a line, line segment, and ray.
line...a straw with twistties that form arrows at each end
To form the arrows, fold the twisttie in half and insert into the straw. Bend the twisttie for form an arrow.
line segment...just a straw with no twistties
ray...a straw with a twisttie at one end to form an arrow
To practice angles, each child will need two straws and one twisttie. Be sure to show the relationship between a ray and an angle. (An angle is two rays joined by a common endpoint.)
To form the angle, attach the straws with the twisttie by poking one end of the twisttie into one end of the first straw and the other end of the twisttie into the second straw.
Now the straws will rotate, so your students can create angles of any size. If you want, you can also use twistties at the other end of each straw to make an arrow.
Straws and twistties also work well to create two and threedimensional figures.
