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Showing posts with label fractions. Show all posts
Showing posts with label fractions. Show all posts

Sunday, April 13, 2014

Fraction Flip Books

When I'm teaching fractions, we do a lot of work with fraction strips and manipulatives.  Another way I have them compare fractions is with fraction flap books.  This year we started with using them for equivalent fractions, so I had them simply glue color the strips of a printable.  (I found the printable by googling fraction strips printable).
Later, as we begin decimals and percents, we will go back to the flap books and under each flap, we'll add the decimal, percent, and a picture depicting each.
Below is the model I made.  I usually make the flap books ahead of time, especially if they have a large number of flaps, such as for this activity, which has nine flaps.  Some kids can make them easily, but for others it's frustrating and takes away from the activity we are doing.

 To make the flap books, you count the number of flaps you will need and divide by 2.  Take the first sheet of paper and fold it so that the corners are not lined up- so there is about two inches difference between one side and the other.  The next piece of paper is placed underneath that piece, and folded so that it is less than the top piece and longer than the bottom piece.  You continue doing this until you have finished all of your flaps.  If you have a long armed stapler, that works better for opening the flaps.  If not, staple the top (as I did below).


The kids colored the strips and glued them on.  Then we cut each strip on the corresponding line.  Now I can ask questions such as, "1/2 is equal to how many fourths?"  They can use the flaps to determine the answer.  Some children need a ruler to line up the 1/2 and see the equivalent fraction.

Wednesday, February 15, 2012

Math Recipes




Every year, measurement is taught at the end of the year.  In order to incorporate it throughout the year, I plan in some projects related to the current curriculum.  We are currently studying fractions and decimals with fifth graders, so this week we will be making smoothies and trail mix.  Here are two easy, "no cook" recipes.  There is a space for the kids to double or half the recipe, so that they are using math operations with fractions.  The students had fun!  (Except one told me, "Mathematician's Smoothie?  That title just sucks all the fun out of it")


Mathematician’s Smoothie Recipe

Before you begin…                                                                              
       Prep time:  5 minutes
       Cooking Time:  0 minutes                
       Total Time:        5 minutes



Oven Temperature:        N/A
       Yield: (how much you get)
               one 5 oz cup
       Difficulty: easy

Tools…
       Measuring cup(s)
       Large Spoon for scooping
       Blender
       Knife
       Cutting board
       Cup (for drinking)
      
Ingredients (What you need)         double           quadruple               


1/3 cup of blueberries                 _______        _______

1/2 of a banana                           _______        _______
(or 1/3 of a large one)
1/4 cup of orange juice               _______        _______ 

3 large strawberries                     _______        _______
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4 ice cubes                                  _______        _______
    

      


Instructions…
1.      Chop the banana into slices.
2.      Cut the strawberries.
3.      Measure ingredients and put them in blender.
4.      Mix for about a minute.
(You may need to open blender and stir and remix.)
5.      Pour carefully into cup and enjoy!

Note:  if you are making at home, you can use different fruits, juice, or add yogurt or milk.

Extra Credit:
Divide this recipe in half:

       3 tablespoons of blueberries     ______ banana

       _____        strawberries           ______  juice

                     _____ ice cubes                





Trail Mix Recipe

Before you begin…
       Prep time:  5 minutes
       Cooking Time:  0 minutes
       Total Time:        5 minutes

       Oven Temperature:        N/A
       Yield: (how much you get)
     4-6 bags
       Difficulty: easy

Tools…
       Large Bowl
       Large Spoon for scooping
       4-6 plastic sandwich baggies

Ingredients (What you need)                  Double                 Half
       ½  cup raisins                                     _________           ________
       1 cup Cheerios                                   _________           ________
       1 Cup Pretzels                                    _________           ________

       1 12 ounce package of M&M’s           _________            ________
       2 cups of Goldfish                               _________            ________
Instructions… 
1.      Place all ingredients in a large bowl.
2.      Stir to distribute everything evenly.
(Be careful not to crush the pieces.)
3.      Scoop an equal share into each bag.