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Click on 'Home' then scroll down to get to information about the history of many of the programs on this site and to see which programs have been recently updated or added.

If you want to contact me for any reason, use the 'Contact' form or e-mail me at the address below. Please let me know if you see mistakes on this site.

Click on 'Programs' to find links to all of the programs that are on this site. Most of the programs are related to math, but you will also find several related to color, a couple related to perspective, a drawing program, and more. Try out the Alien Arithmetic program in the Arithmetic area to have fun thinking in a different base.

Click on 'SCORM' to learn about Shareable Content Object Reference Models, what they are, why they are useful, and how to make your own.

The 'About L² page gives you information about how I got the nickname L² and why I work on this site and the programs that this site contains. I also occasionally update the page to let you know what kinds of things I am working on now or planning on working on soon.

Click here to find some of the static handouts and worksheets that I have created for the math classes that I teach at Lansing Community College.

Click here to see a history of most of the programs on this site and to subscribe to the RSS feed if you wish to receive notices when a program is improved or a new program is made.

DISCLOSURE: IPower Web is my website host. It is reasonably priced and I have used their services for many years. Click on this link if you are thinking of starting your own website and would like to consider IPower's services. I get a small referral fee if you do!

Addition         Subtraction         Addition/Subtraction
Multiplication         Division         Long Division         Multiplication/Division

Addition:  Click 'Defaults' or fill in 1 or 2 of the 3 rows and any other parameters that you want to set and then click 'Defaults'. Default behavior will be used to fill in the other rows based on your other entries.

Minimum Maximum   First Addend: + Second Addend:     Sum:

Number of Rows: - 1 2 3 4 5 6 7 8 9 10 11 12 Number of Columns: - 1 2 3 4 5 6 7 8 9 10 11 12 Mix orders? yes no

Subtraction:  Click 'Defaults' or fill in 1 or 2 of the 3 rows and any other parameters that you want to set and then click 'Defaults'. Default behavior will be used to fill in the other rows based on your other entries.

Minimum Maximum   Minuend: - Subtrahend:     Difference:

Number of Rows: - 1 2 3 4 5 6 7 8 9 10 11 12 Number of Columns: - 1 2 3 4 5 6 7 8 9 10 11 12 Mix orders? yes no

Choose from the addition mins and maxs and then the subtraction problems will be chosen from the same family of equations.

Addition and Subtraction:  Click 'Defaults' or fill in 1 or 2 of the 3 rows and any other parameters that you want to set and then click 'Defaults'. Default behavior will be used to fill in the other rows based on your other entries.

Minimum Maximum   First Addend: + Second Addend:     Sum:

Number of Rows: - 1 2 3 4 5 6 7 8 9 10 11 12 Number of Columns: - 1 2 3 4 5 6 7 8 9 10 11 12 Mix orders? yes no

Multiplication:  Click 'Defaults' or fill in 1 or 2 of the 3 rows and any other parameters that you want to set and then click 'Defaults'. Default behavior will be used to fill in the other rows based on your other entries.

Minimum Maximum   Multiplicand: × Multiplier:     Product:

Number of Rows: - 1 2 3 4 5 6 7 8 9 10 11 12 Number of Columns: - 1 2 3 4 5 6 7 8 9 10 11 12 Mix orders? yes no

Division:  Click 'Defaults' or fill in 1 or 2 of the 3 rows and any other parameters that you want to set and then click 'Defaults'. Default behavior will be used to fill in the other rows based on your other entries.

Minimum Maximum   Dividend: ÷ Divisor:     Quotient:

Number of Rows: - 1 2 3 4 5 6 7 8 9 10 11 12 Number of Columns: - 1 2 3 4 5 6 7 8 9 10 11 12 Mix orders? yes no

Division:  Click 'Defaults' or fill in 1 or 2 of the 3 rows and any other parameters that you want to set and then click 'Defaults'. Default behavior will be used to fill in the other rows based on your other entries.

Min Max     Min Max     ⇐ Quotient Divisor:   )   ⇐ Dividend

Number of Rows: - 1 2 3 4 5 6 7 8 9 10 11 12 Number of Columns: - 1 2 3 4 5 6 7 8 9 10 11 12 Mix orders? yes no

Choose from the multiplications mins and maxs and then the division problems will be chosen from the same family of equations.

Multiplication and Division:  Click 'Defaults' or fill in 1 or 2 of the 3 rows and any other parameters that you want to set and then click 'Defaults'. Default behavior will be used to fill in the other rows based on your other entries.

Minimum Maximum   Multiplicand: × Multiplier:     Product:

Number of Rows: - 1 2 3 4 5 6 7 8 9 10 11 12 Number of Columns: - 1 2 3 4 5 6 7 8 9 10 11 12 Mix orders? yes no