This aplet lets the student use a statistical simulation
to model the common fund raising activity of tossing a coin onto a grid of
squares. The user can accumulate experimental
probabilities for a square size of 10cm and differing coin diameters. The
curve fitting facilities of the aplet can then be used to find a rule giving the
probability p for a given diameter d.
The Poisson distribution is used when randomly
allocating n units into m packets. In this case the aplet
models the allocation (sowing) of 200 or more dandelion plants into a 10 by 8
patch of soil.squares. This patch of soil is then divided up into 80 plots (1 by
1) and the number of dandelion plants in each plot is recorded.Once
these results are graphed as a histogram the user has the ability to
superimpose, as a frequency polygon, the expected results according to either
the Binomial or the Poisson distributions, allowing comparison between the two
distributions as to which is the better predictor.
This aplet lets the student investigate geometric
transformations using matrices.
The user can examine the effect of various 2x2 matrices
on the shapes provided. Needs guidance from the teacher.
Note: This aplet can easily be produced without programming by
simply modifying the Parametric aplet. Click
here for an article on how to do this.
This aplet lets the student explore the relationship
between the values of m and c in the equation y=mx+c, and the shape of the
resulting linear graph, with the equation displayed on the screen.
A student worksheet is provided which encourages the student to investigate this
This aplet provides simple drill practice for students
learning the laws of indices, with the option of including negative
powers. It presents students with practice problems in correct
mathematical layout and then allows them to enter the simplified answer. There
are a wide variety of styles of problem. It will then tell them if they are
right or wrong, offering a second chance if needed. Unfortunately it dooes not
give the correct answer if they fail both tries :-(