1 My first six months with ClassPad. By Damien Bushby of Blackburn High School, Victoria Presented at MAV Dec, 2007

2 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.

5 Stylus Mouse Delete Left Negative / ALT Clear line or highlighted area Execute Shortcuts usb Calc. Link

6 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.

7 To remove everything from the screen. 1. Use the stylus, or pen lid on a pen. 2. Edit Menu 3. Clear All 4. OK Edit | Clear All | OK

8 It is also advisable to ‘Clear All Variables’ as well. Edit | Clear All Variables | OK This will not clear or To do this either Action | Command | DelVar | f or 1. | Variable Manager | main 2. Tick f 3. Edit | Delete | OK | Close | Close

9 Ensure settings are correct.

10 There are a variety of settings. I generally ensure it is set to :

11 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.

12 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.

13 In ‘Standard’ mode answers are exact answers such as fractions and surds. In ‘Decimal’ mode all answers are decimals.

14 By highlighting the answer and pressing this button the answer changes : to Decimal (in Standard mode) : to Standard (in Decimal mode).

15 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.

16 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.

17 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.

18 Solving equations with Algy 2

19 Teaching equations with

20 Clear the Algy 2 screen File | New | OK To move to the next line press the EXE button.

21 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

22 Opposite of + is – Opposite of – is + Opposite of is

23 correct logic x incorrect logic

24 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

26 Go to the MENU then go to Graph&Table

27 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.

29 Find the x-intercept of a linear graph with Graph&Table

30 Graph window settings. Table settings Display graph Display table Inequalities for graphs Derivatives table Zoom box Move graph Find the x-intercept

31 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

32 Quadratic calculations in Main

33 Define 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

34 2. then Edit | Copy 5. Highlight y6(x) 6. then Interactive | Transformation | factor 1. Highlight y6(x) 3. tap new line 4. then Edit | Paste Factor

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

36 y6’(x)=0  x-coordinate of turning point 1. Highlight y6(x) from y6(x)=0 2. Interactive | Calculation | diff | OK 3. Highlight line 4. Interactive | Advanced | solve Differentiate

37 Copyto the next line 1. Highlight line 2. Interactive | Calculation | diff | OK Double Differentiation

38 Integration anti-differentiation 1. Highlight y6(x) 2. Interactive | Calculation | 3. +C

39 Integration anti-differentiation store either mth | VAR or 2D | VAR For variables:

40 Quadratics with Graph&Table

41 Go to the MENU then go to Graph&Table

42 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. Graph

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

44 Analysis | G-Solve | Root  x-intercepts Analysis | G-Solve | y-Intercept Analysis | G-Solve | Max  No maximum turning point

45 Analysis | G-Solve | Min Analysis | G-Solve | Analysis | Sketch | Cls Analysis | G-Solve |

46 Determine the quadratic equation from 3 points.

47 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.

48 Alternatively in Main

49 Statistics button Calc | Quadratic Reg

50 Alternatively in Main To add an extra line tap the icon again. Variables from mth | VAR or 2D | VAR Hence

51

52 Keyboard | mth Keyboard | mth | TRIG Keyboard | mth | CALC Keyboard | mth | OPTN

53 Keyboard | abc Keyboard | abc | CAP Keyboard | mth | VAR Keyboard | mth | VAR | CAP

54 Keyboard | abc | Keyboard | abc | | CAP Keyboard | abc |MATH

55 Keyboard | abc | SMBLKeyboard | cat

56 Keyboard | cat

57 Keyboard | cat

58 Keyboard | cat

59 Keyboard | cat

60 Keyboard | cat Keyboard | 2D | CALC | ADV