Pi Day Agenda 2005

All Classes

Read Sir Cumference books – one student while eating time

Toothpick drop activity

In 1777, Count Buffon proposed dropping a needle on lined paper and asking for the probability of the needle crossing a line.  The answer surprisingly is related to pi.  The students make 100 drops of a toothpick (one unit length) onto paper with lines one unit apart.  The students count the number of times that the toothpick crosses the lines – this is a hit.  The ratio of hits to 100 approaches 2 / Œ.  Pi can be approximated by two times the number of drops divided by the number of hits.

Circle game

Algebra 2:

Identify circles worksheet

Given graph of a circle – write equation (x – h)2 + (y – k)2 = r2

Circle game

Algebra 1:

Perfume ad – due next day

Students are advertisement experts for the Smell So Good perfume company.  A new unisex fragrance called Œ has been developed.  The company wants a magazine ad that will embody the true meaning of Œ and capture the attention of the target audience (ages 16-25).

Measure circular objects worksheet

Students are given several circular objects and asked to measure the diameter and circumference using string and a ruler.  The worksheet asks the students to compute the c + d, c – d, c * d, and c / d.  Then the students are asked to note any observations regarding these calculations.

Calculus:

Circle game

Lanette VonSeggern