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Greetings! I have again tried to find something for everybody, no matter what your grade level. Hope these resources are helpful!
1. Math Mammoth news
2. Strategies for addition & subtraction facts
3. Two free math books: Geometry in Art & Fun Math for Young Learners
4. Area Battle game
1. Math Mammoth news
Just an advance sale notice... I will be running a sale around Thanksgiving
, and all downloads & CDs will be 25% off!
Another upcoming news is that the Math Mammoth PDF files will soon be enabled for annotating. This means that you will be able to open the file in Adobe Acrobat Reader (version 9 or X) and use a neat "typewriter" tool to actually TYPE in the document. You can also highlight words, add sticky notes, or draw circles, lines, polygons, and more! So... your children can actually fill in the book on the computer, if they so wish, including completing geometric drawing problems.
While I cannot check this personally, I THINK this will also work on a tablet device such as a iPad. However, it looks like this will NOT work on the PDFs sold at Currclick, because they add their own security settings (and watermark) to the files... I have total control over the ones sold at Kagi but not over those sold at Currclick.
If you are an old customer from Kagi and would need these types of
files, please email me and I can provide you new download links.
Make sure to include the email address or name you used when ordering
If you're an old customer from Currclick, and purchased Light Blue series
products, you will be able to simply redownload your order once I upload
the new files. For other books, email me, and attach your email receipt
from Currclick. (I have no access to the customer database at Currclick.)
Note: If I get lots of requests for these new files, it may take WEEKS
or even over a month to go through them. So please don't expect a fast
response. And if I get over a thousand requests, I might not be able to
do this at all... since there is no automated way to do it. We'll have to
2. Strategies for addition & subtraction facts
Learning math facts seems to be a constant "hot topic", it just never goes out of popularity! So... I want to help (or remind) you once again about the basics.
I heartily recommend first to concentrate on the concepts and strategies, and only later add in random drills. That is true, whether it is addition, subtraction, multiplication, or division.
I've made a video about strategies for learning addition facts
. In it, I list several strategies to learn addition facts for first and second grade math. I show the pattern of "Sums with 7", which also is used with other sums, then the 9-trick, the 8-trick, the doubles, doubles plus one more, and how to do random drill using the structure of the addition table.
Then, a new video of mine about strategies for subtraction facts
. I recommend the usage of FACT FAMILIES in order to learn the basic subtraction facts. That way, when children have a subtraction problem, such as 7 − 5 = ____, they will learn to think through addition and fact families: 5 and 2 and 7 form a fact family, OR that 5 + 2 = 7, so 7 − 5 = 2. The video also shows a fun tool for subtraction facts called number rainbows!
3. Two free math books:
Geometry in Art & Fun Math for Young Learners
Renee from SchoolSparks.com is offering a totally free ebook for kindergarten math!
It basically is a worksheets collection for K, colorful and beautiful.
The book covers number recognition, counting, patterns, sorting and classifying, and an introduction to graphs, and has 53 pages.
I was told about a free download of the book Geometry in Art
, by Hilton Andrade de Mello. (On the page, you need to scroll down to the words "free downloading".)
This book is a basic introduction to geometry in art, with topics such as polygons, spirals, polyhedrons, tessellations, perspective, the golden ratio, symmetry, geometry and symbolism, and geometry and informatics. It has lots of illustrations and artwork by various artists, and can serve as a nice introduction for anyone who hasn't studied these topics before.
4. Area "Battle" game
I talked about area and perimeter in my last newsletter as well, but this is too good to pass by! Math Hombre has posted a neat game
for students to practice area and perimeter with lots of images to show what's going on... It's basically the game of "war" adapted to area, and the students themselves make the cards for the game, thereby having to really apply the concept. Suitable for about 5th grade.
Area Battle game
- Mowing the lawn - mathematically
Mowing the lawn is a oh-so familiar task to many of us. Now here's an article that approaches the problem of pushing the lawnmower the shortest distance possible mathematically.
- Foiled by the FOIL method?
A neat post showing how FOIL can fool students (just let them multiply a binomial by a trinomial)... and an argument for crumpling FOIL altogether.
- GeoGebra 4.0 available
Those of you who use GeoGebra - a new version is now available. And if you don't use it--it is a FREE dynamic geometry software meant for middle school on up. It seems to be getting better and better, and there are more and more supportive resources as well, including a new GeoGebraTube!
- Kakuro - cross-sums puzzle
You fill in the white space using digits 1 to 9. The little numbers indicate what the sum of the neighboring row or column of blocks should be. You cannot use the same digit twice in any sum, so for example 12 cannot be 4 + 4 + 4. I find it gives nice simple addition practice for elementary school kids, yet is fun. This game is immensely popular in Japan, according to Wikipedia.
- Tiling word problem
This is good for middle school - whenever students are studying decimals. Square polystyrene tiles, 50 cm by 50 cm, are used to cover the ceiling of a classroom measuring 7.4 m by 4.5 m. Find the number of tiles that are needed, and the total cost if one tile costs $130.
- Mathematics and Music
I stumbled upon a nice article explaining some of the basics of how MATH and MUSIC connect together. This article talks about frequencies & wavelengths, shows graphs for the frequencies of the notes using the exponential function, graphs of sine waves, the harmonic series, the semi-tones within an octave, and so on.
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Till next time,