# Surf for More Math

## Lesson 3 - Patterns in a 100 chart

To encourage students to have fun on the Web while learning about Patterns
in a 100 Chart, here are some games and interactive activities they
can do on their own or in pairs.

**Goal**

Representing adding and subtracting patterns
on a 100 chart.

**Builds Upon **

Student Book pages 8-9

**Instructions for Use **

Counter
Square - Click and drag markers on a 100 chart to add and subtract
patterns.

Counter Square lets students
show patterns in a timetable sequence, or mark prime numbers using counters
of different colours and shapes.

To use Counter Square, click the "Make Counters"
button to create multi-coloured counters. Drag and drop them onto the
grid to show patterns of the students' choice. Click "Ideas"
for suggestions on how to use counters on the grid.

Scribble
Square helps students represent adding and subtracting patterns
on a 100 chart.

To use Scribble Square, draw
on the screen using the left-hand mouse button.

Click 'Clear' to remove all lines. Click 'Exit'
to exit the program.

Number
Patterns allows students to create many numerical patterns using
and interactive 100 chart and calculator.

To use the interactive calculator, start by pressing any number. This
number will appear in the window. Press the '+' button on the calculator,
the number selected becomes shaded on the hundreds board. Press the
some number again and then the '=' button on the calculator. Keep pressing
the '=' button to show a numerical pattern. Try making different patterns
with division, multiplication, subtraction or a combination.

Have the students describe the number patterns they create.