Texas Instruments TI-73 Explorer Guida rapida

TI-73 / TI-83 Plus

Math by Hand

How To…

Start and Quit the Application

Use On-screen Options and Menus

Use Step-by-Step Mode

Use Fast Math Mode

Use Missing Pieces Mode

Delete the Application

More Information

Error Recovery

TI-73 / TI-83 Plus Math by Hand Application Page 2

Important Information

Texas Instruments makes no warranty, either expressed or

implied, including but not limited to any implied warranties of

merchantability and fitness for a particular purpose, regarding

any programs or book materials and makes such materials

available solely on an “as-is” basis.

In no event shall Texas Instruments be liable to anyone for

special, collateral, incidental, or consequential damages in

connection with or arising out of the purchase or use of these

materials, and the sole and exclusive liability of Texas

Instruments, regardless of the form of action, shall not exceed

any applicable purchase price of this item or material. Moreover,

Texas Instruments shall not be liable for any claim of any kind

whatsoever against the use of these materials by any other

party.

Graphing product applications (Apps) are licensed. See the

terms of the license agreement for this product.

Microsoft, Windows, Windows NT, Apple, and Mac are

trademarks their respective owners.

TI-73 / TI-83 Plus Math by Hand Application Page 3

What Is the Math by Hand Application?

The Math by Hand application familiarizes you with mathematical

algorithms for addition, subtraction, multiplication, and division. For each

of these, three different modes are available:

•Step-By-Step mode shows the problem worked out one step at a

time, emphasizing place value in the base-ten system for each

algorithm.

•Fast Math mode shows the problem worked out in an animated

sequence that is similar to how you would solve the problem on

paper.

•Missing Pieces mode is a quiz that presents solved problems with

blank place values. You supply these place values to complete the

algorithm.

The Math by Hand application is a concept application that TI wants to

share with our customers, educators, and students before the product

definition and testing are complete. It is an alpha software version, and as

such, it may contain imperfections, or the coding may be incomplete.

TI invites your feedback concerning the functionality and educational

value of the Math by Hand application. Please send your comments and

questions to [email protected]i.com.

TI-73 / TI-83 Plus Math by Hand Application Page 4

What You Need

Note

In this guidebook, any information that pertains to the TI-83 Plus also

pertains to the TI-83 Plus Silver Edition, unless otherwise noted.

Hardware and software

Notes

TI-73 with version 1.60 or higher of the

Graph Explorer software

—or—

TI-83 Plus or TI-83 Plus Silver Edition

with version 1.14 or higher of the

operating system software

You can download a free copy of the

latest Graph Explorer or operating

system software from

education.ti.com/softwareupdates.

Follow the link to Operating Systems.

Computer with Microsoft ® Windows®

95/98/2000, Windows NT®, or Apple®

Mac® OS 7.1 or higher installed

TI-GRAPH LINK™ computer-to-device

cable

If you do not have this cable, call your

distributor, or order the cable from

TI’s online store.

TI-GRAPH LINK software that is

compatible with the TI-73 or the

TI-83 Plus

—or—

TI™ Connect software, which works with

all supported models of Flash-based TI

graphing devices.

You can download free copies of

TI-GRAPH LINK and TI Connect

software from

education.ti.com/softwareupdates.

Follow the link to Connectivity

Software.

TI-73 / TI-83 Plus Math by Hand Application Page 5

Where to Find Installation Instructions

Detailed instructions on installing this and other applications are

available at education.ti.com/guides. Follow the link to Flash

installation instructions.

Getting Help

The instructions in this guidebook are only for this application. If

you need help using the TI-73 or TI-83 Plus, refer to its

comprehensive guidebook at education.ti.com/guides.

TI-73 / TI-83 Plus Math by Hand Application Page 6

Starting and Quitting the Application

Starting the Application

1. Press

nto display the list of applications on your TI73 or

TI83 Plus.

2. Select

MathHand. The application’s information screen is

displayed.

3. Press any key to continue. The developers’ screen is

displayed.

4. Press any key to continue. The SELECT AN OPERATION menu

is displayed.

Quitting the Application

From the SELECT AN OPERATION menu, select QUIT or press

\.

TI-73 / TI-83 Plus Math by Hand Application Page 7

RSTUV

Navigating

Selecting Menu Items

You can select menu items in the following ways.

•Press hor `to highlight the menu item, and then press

¯to select it.

•Press the number key that corresponds to the menu item.

Using On-Screen Options

Each screen displays one or more options along the bottom of

the screen. To select an option, press the graphing key directly

below the option.

For example,

press Tor

Uto select

START.

TI-73 / TI-83 Plus Math by Hand Application Page 8

Using Step-by-Step Mode

The Step-by-Step mode shows an explanation of each step that

you take to solve a problem. This mode emphasizes the base-ten

system to help develop the fast algorithm for an operation. Each

place value is shown separately with details; zeros that are

usually left off for efficiency are shown, and carrying numbers to

the next higher place value is handled in a developmental form.

1. Select an operation from the SELECT AN OPERATION menu.

2. Select

STEP-BY-STEP from the SELECT A MODE screen.

3. Enter the first element of the problem, and then press ¯

or the appropriate operation key (¥, , , or ).

4. Enter the second element of the problem, and then press

¯.

Tip

If you make a mistake when you enter a number, you can correct

it in one of the following ways.

•Press sto delete the entire number.

•Press _to move the cursor to the incorrect number, and then

enter the correct number.

•Press ^to delete the digit at the cursor location.

5. Select

START to display the first step in solving the problem.

TI-73 / TI-83 Plus Math by Hand Application Page 9

6. Select

NEXT STEP to display subsequent steps until the

problem is solved.

7. Select

REPEAT to erase the solution so that you can step

through it again.

—or—

Select BACK to return to the SELECT A MODE menu.

—or—

Select NEW to enter a new problem for the same operation.

TI-73 / TI-83 Plus Math by Hand Application Page 10

The examples below show the algorithms used to solve

problems for each type of operation.

Addition

Example: 34 + 27 = ?

First, the values in the ones place are added, and the

partial sum is shown: 11 =4+7.

Note: Instead of showing the carrying of the 1 to the

tens place above the 3, the partial sum of the values

in the ones place, 11, is shown. This helps students

who are learning the algorithm for the first time or

those who have trouble lining up their writing.

Next, the values in the tens place are added and the

partial sum is shown: 50 =30 +20.

In the final step, the partial sums are added and the

answer is shown: 11 +50 =61.

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