1

My first six months

with ClassPad.

By Damien Bushby of Blackburn High School, VictoriaPresented at MAV Dec, 2007

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Which calculator?

• Continuation with current company.

• Trial of new model.

• Fat fingers and poor typing.

• Check out the opposition.

• Ease of learning.

• Company support.

• One calculator for Further and Methods.

3

Open the case with one hand. Use your other hand to hold the body.

The case will fit on the back of the body.

4

At the back of the ClassPad is a reset button (P).

This should be used when the stylus doesn’t tap correctly or when the language has changed.

Alternatively a less dramatic approach is:

MENU | Touch Panel Alignment

Then tap the centre of the 4 crosses.

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Stylus

Mouse

Delete Left

Negative / ALT

Clear line or highlighted area

Execute

Shortcuts

usb

Calc. Link

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Use the stylus to go to the Main screen.

Either using the icon on the Menu screen.

Or the shortcut at the bottom of the screen.

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To remove everything from the screen.

1. Use the stylus, or pen lid on a pen.

2. Edit Menu

3. Clear All

4. OKEdit | Clear All | OK

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It is also advisable to ‘Clear All Variables’ as well.

Edit | Clear All Variables | OK

This will not clear or

To do this eitherAction | Command | DelVar | f

or

1. | Variable Manager | main

2. Tick f3. Edit | Delete | OK | Close | Close

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Ensure settings are correct.

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There are a variety of settings.

I generally ensure it is set to :

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If you want binary calculations for embedded microprocessors this is useful.

The ‘Bin’ on the bottom left usually indicates the student is in the wrong setting and it should be changed.

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The ‘Alg’ setting is the usual setting.

The ‘Assist’ setting shows the implied operations. It does not perform the algebraic calculations.

In this case I used the x from the main keyboard. Note the horizontally centred dot is not a decimal but the multiplication operand.

TAPAlg Assist

2 2x x

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In ‘Standard’ mode answers are exact answers such as fractions and surds.

In ‘Decimal’ mode all answers are decimals.

TAPStandard Decimal

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By highlighting the answer and pressing this button the answer changes

: to Decimal (in Standard mode)

: to Standard (in Decimal mode).

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In ‘Real’ mode an answer containing an imaginary part will either give ‘No Solution’ or produce an error.

The ‘Cplx’ mode ensures answers with an imaginary part are included.

1 i

TAPReal Cplx

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Click the ‘Keyboard’ key on the main keypad. Then use the stylus to click the ‘mth’ tab. This gives the maths keyboard.

Tap the return to keyboard main tab button if present.

Tap the ‘TRIG’ button to go to the maths trigonometry sub keyboard.

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Care should be taken that the correct angle mode is set. The angle type can be included to override the general setting as shown below.

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Solving equations with Algy 2

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Teaching equations

with

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Clear the Algy 2 screen

File | New | OK

To move to the next line

press the EXE button.

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Checks the logic from the top.

Checks the logic from the previous line.

Logic and

Logic or

No Solution

x in Real Numbers Set

Creates new Zone below

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Opposite of + is –

Opposite of – is +

Opposite of

Opposite of

is

is

3 3x x

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9The from 9 13

13or from keyboard

2D main menu

correct logic

x incorrect logic

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By deleting parts of each step and saving; a set of problems can be created that can be transferred to the students.

25

Investigating linear graphs

with Graph&Table

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Go to the MENU

then go to

Graph&Table

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Various settings can be altered

via the menu.

The ClassPad manual gives a good description of each option, though most are obvious.

28

To delete: tap each line and

press

Tap on the line to the right of the equation to change its type.

Tap the graph button on the top left to display the ticked graphs.

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Find the x-intercept of a

linear graph with Graph&Table

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Graph window settings.

Table settings

Display graph

Display table

Inequalities for graphs

Derivatives table

Zoom box

Move graph

Find the x-intercept

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Use the up and down mouse arrows to cycle through the graphs.

1. Analysis | G-Solve | Root

2. then mouse to pick graph

3. then EXE

x-intercept 2,0

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Quadratic calculations

in Main

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Define26( ) 2 15y x x x

By choosing y6 the function is available from Graph&Table. The y must come from keyboard | abc NOT variables or hard keyboard.

The x is from the keyboard.

Action | Command | Define

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2. then Edit | Copy

5. Highlight y6(x) 6. then Interactive | Transformation | factor

26( ) 2 15 ( 3)( 5)y x x x x x

1. Highlight y6(x)

3. tap new line 4. then Edit | Paste

Factor

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To solve for the x-intercepts 1. Highlight y6(x)=0 2. then Interactive | Advanced | solve | OK

x-intercepts ( 3,0) and (5,0) Solve

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y6’(x)=0 x-coordinate of turning point

turning point (1, 16)

1. Highlight y6(x) from y6(x)=0 2. Interactive | Calculation | diff | OK 3. Highlight line 4. Interactive | Advanced | solve

Differentiate

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Copy to the next line

1. Highlight line 2. Interactive | Calculation | diff | OK

6 ''( ) 0 hence a minimumy x

Double Differentiation

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Integrationanti-differentiation

1. Highlight y6(x)2. Interactive | Calculation |

3.

3. 3.

+C

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Integrationanti-differentiation

store

either mth | VAR or 2D | VAR

For variables:

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Quadratics with

Graph&Table

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Go to the MENU

then go to

Graph&Table

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As was

Defined as y6(x) it is on Sheet1 of Graph&Table.

Untick y1 to y5 and graph the function. Change window

settings to fit the graph. Then

Change window directly, through zoom, or arrows then

Arrows needs | Graph Format | G - Controller ticked.

2 2 15x x

Graph

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Arrows on graph move graph in that direction. Coordinates shown below graph.

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Analysis | G-Solve | Root

x-intercepts

Analysis | G-Solve | y-Intercept

Analysis | G-Solve | Max

No maximum turning point

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Analysis | G-Solve | Min

Analysis | G-Solve | dx

Analysis | G-Solve | dxAnalysis | Sketch | Cls

Analysis | Sketch | Cls

Analysis | G-Solve | dx

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Determine the

quadratic equation

from 3 points.

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( , ) {(1, 16), (2, 15), (3, 12)}x y

Go to Statistics

Enter the data

(x,y)=(list1,list2)

Beware the time delay while entering the numbers. You may lose the first digit of the number.

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( , ) {(1, 16), (2, 15), (3, 12)}x y

Alternatively in Main

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Statistics button

Calc | Quadratic Reg

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Alternatively in Main

To add an extra line tap the icon again.

Variables from mth | VAR or 2D | VAR

( , ) {(1, 16),

(2, 15), (3, 12)}

x y

Hence

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1( 3)( 5) 1( 5)( 3)y x x x x

21( 1) 16y x

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Keyboard | mth

Keyboard | mth | TRIG

Keyboard | mth | CALC

Keyboard | mth | OPTN

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Keyboard | abc

Keyboard | abc | CAP

Keyboard | mth | VAR

Keyboard | mth | VAR | CAP

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Keyboard | abc |

Keyboard | abc | | CAP

Keyboard | abc |MATH

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Keyboard | abc | SMBL Keyboard | cat

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Keyboard | cat

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Keyboard | cat

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Keyboard | cat

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Keyboard | cat

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Keyboard | cat

Keyboard | 2D

| CALC

| ADV