KenKen is a grid-based numerical puzzle that uses the basic math operations – addition, subtraction, multiplication, and division – while also challenging your logic and problem–solving skills.
By altering the size of a KENKEN grid, from 3 x 3 up to 9 x 9, and employing different combinations of the math operations, five different difficulty levels can be generated, and a seemingly endless number of puzzles.
In a way, KenKen is like a game of chess: The more you think ahead to your next move and consider all the possible outcomes, the better you’ll get-and the smarter you’ll become!
Bookmark the site to return each day for the daily puzzles, or sign up (as a teacher) to receive the free newsletter and a set of KenKens will be emailed to you weekly.
Note: You can also purchase a Premium Membership, that allows you to use the puzzles ad-free.
Details at the website.
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- Branch of Science – Search for a scientist by his/her field of study from Archaeology to Sociology.
- Gender/Minority Status – Women, African Americans, Asian Americans, etc. (Note: This section is woefully short on scientists of varying races and ethnicities. Fortunately, the FAQ section on this website tells you how to submit names for inclusion.)
- Nationality – Find scientists from many nations including the U.S., China, Egypt, France, Germany, Israel, Japan, Pakistan, and Russia.
- Prize Winners – Read the Bios of Scientists and Mathematicians who have been awarded prizes (i.e., The Nobel) for their work.
- Alphabetical Index – An A to Z list of all of the scientists and mathematicians whose biographies are archived on the website. Click on any one, and a new page opens with the scientist’s picture and bio. References are provided as well.
- the signers of the Declaration of Independence
- the signers of the Articles of Confederation
- the signers of the U.S. Constitution
The biographies include interesting information on the life and times of each Founder along with a portrait picture.
This site also has the biographies of 34 of the Founding Fathers’ wives. You can also read the Declaration of Independence at this site!
When you get to the site you will see the “Featured Founder.” Click on the name, and a new page opens where you can read the biography. You will also see a menu on the left side of the screen that you can use to access all of the biographies archived at this site.
This website is a good resource for your elementary American history studies.
Thank you,
Glenda, Charlie and David Cates
