Square Roots Reference Card

It can be very overwhelming to work with square roots of non-perfect squares.  Use this FREE square roots reference card to help your students as they begin working with square roots.  Later, have students memorize their perfect squares from the square root of 1 to at least the square root of 225.

Get the FREE .pdf here: SquareRootsReferenceCardFrom1to400

4×5 Square Roots Reference Card:

SquareRootsReferenceCard_1-400_4x5_WhiteBackground

5×4 Square Roots Reference Card:

SquareRootsReferenceCard_1-400_5x4_WhiteBackground

Square Roots Reference Card – 5 to a page

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Square Roots Reference Card – 10 to a page

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Get the FREE .pdf here: SquareRootsReferenceCardFrom1to400

Try some related activities:

ApproximatingSquareRootsMaze1 ApproximatingSquareRootsPuzzles1 RationalAndIrrational1

amyharrison

Divisibility Rules Poster Options

I am working on converting old anchor charts and notes to typed posters.

Divisibility Rules Poster Options:

Color:

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Black and White:

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Use these photos as a poster to display in your classroom, or print for use in student notebooks/binders.  Here is the FREE .pdf:  DivisibilityRulesPoster.

So, what is this trick for the 7’s divisibility rules?  

Check it out:

  • Double the last digit and subtract it from the remaining part of the number.  If the answer is either 0 or it is divisible by 7, then the original number is divisible by 7.

Example:

  • Start with the number:  1015.
  • Isolate the last digit:  1015 .
  1. Double the last digit.  5 x 2 = 10.
  2. Subtract the result (10) from the remaining part of the number (101):  101 – 10 = 91
  3. Determine whether your answer is equal to 0 or divisible by 7.  If it is, the number is divisible by 7.  If it is not, the number is not divisible by 7.
  • 91 divided by 7 equals 13, which is a whole number.
  • Since 91 is divisible by 7, that means 1015 is also divisible by 7.
  • If you are curious, and don’t feel like working it out… 1015 divided by 7 equals 145.

It is probably easier just to do long division in most cases, but it is always fun to learn a new trick 😉

Check out my post on making a divisibility rules foldable.

AmyHarrisonBWSquare

Square Roots on the Clock: Spontaneous FREE Resource

Great idea for connecting the clock to square roots:

I saw this pin on Pinterest, and was really excited (thinking it would be a printable).  NOPE, it is an real clock!  The product looks great, but every teacher (that I know of) has a clock in his/her classroom, so it is unnecessary for classroom use. However, If you are a teacher out there that doesn’t have a clock (and wants to buy one), you may want to consider the above resource.

If you are a teacher that already has a clock (isn’t that all of us?), check this out:

I decided to create a few FREE printable resources that teachers can use.  The “Post-It” Cards, and Star Cards can be taped to the clock.  Obviously, actual post-its can be used too.  You can print the other pages with the completed clocks as posters.

Square Roots Clock Ideas (PDF)

I just made the stars yesterday, so I wanted to use them for something.  I have other files with regular numbers in the stars, blank stars, and different styles/colors of stars.  

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Download the free .pdf file here:  Square Roots Clock Ideas

I originally started making the stars to use for a very successful *Star Student*  idea that I have used in the past.  

Anytime a student earned an A on a test/quiz, I put a star with the student’s name (and the date of the test/quiz) on the bulletin board.  One year, my student aide suggested sectioning off the board by period, which was a great idea!  Every quarter (or when the board got full), I distributed the stars to the students.  I noticed that many students kept their stars in their binder cover.  Some even traded with friends!  

Hopefully I can find pictures… it was a beautiful way to make my classroom colorful!  When I do get around to writing more about this, look out for another free PDF.  

Note:  Some schools have a star punch that you could use  For some crazy reason, my most recent school did not.  If this is the case, there are companies that make star punches.  For example, when my mom was a STAMPIN’ UP Demonstrator, she used her star punch to make card stock stars in various colors.  She even made some hearts for valentine’s day, and some flowers.  I truly appreciated her kindness 🙂

amyharrison

What can you do with the extra time after a lesson?

Try the Guess a Mystery Number game.  It is great for a warm-up or for when you have extra time after the lesson.  Download the free game.

Guess a Number

Here is a sample of a completed game:Guess a Mystery Number Game

How to get started…

• Pick a 3 Digit Number
• All digits have to be unique (they can’t repeat).

The class will guess until they get the right answer.

As you go, encourage the students to cross off digits that cannot be the correct answer based on proof.

Ways to involve students…

• One student can come up with the secret number.
• Another student can come up and write on the Smart Board.
• A third student can call on the students to guess.
• The rest of the students can make guesses.

It becomes easier as numbers are crossed off, so all students feel comfortable participating.

This activity is good for a quick warm-up or extra time at the end of class.

Be sure to print out multiple game tables because they will get used up fast!

Download a free copy of the game (.pdf):  Guess A Number Game

amyharrison