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					         Teaching Concept #1
1.3.k2
                Finding Whole Numbers on a
                               Number Line




            Place the following numbers on the line:
                     230, 333, 450, 470, 336

                                                       Slide 1
         Teaching Concept #2
1.3.k2
              Finding Fractions on a Number
                                     Line

                   0                               1


                   0           1/4     1/2   3/4   1


         Make the ultimate fraction number line which
                includes all the above fractions.

                                                        Slide 2
         Teaching Concept #3
1.3.k2
              Finding Decimals on a Number
                               Line




             Place the following numbers on the line:
                          .25, .3, .21, .99

                                                        Slide 3
          Teaching Concept #4
1.3.k2
                       Knowing the Place Value
                         of Whole Numbers
  (Red)          (Blue)       (Green)    (Yellow)   (Purple) (Black)   (Black)   (Blue)    (Orange)

 HUNDRED
             TEN THOUSANDS   THOUSANDS   HUNDREDS    TENS    ONES                TENTHS   HUNDREDTHS
THOUSANDS

    4              5             6          3          2       1       DECIMAL     9          8




              Which number is in the hundreds place?
              Which number is in the thousands place?
              Which number is in the tens place?
              Which number is in the hundredths place?
              Which number is in the ones place?                                               Slide 4
         Teaching Concept #5
1.3.k2
             Estimation With Whole Numbers




                               12,850

         Estimate the number to the nearest hundred.


                                                   Slide 5
         Teaching Concept #6
1.3.k2
               Estimation With Fractions and
                      Mixed Numbers

     Estimating with fractions is just like estimating
          with whole numbers. When rounding or
         estimating a fraction, you must decide if
                the fraction is ½ or greater.

               What whole number is closest to…
                             ¾?
                           4 1/6?
                                                         Slide 6
         Teaching Concept #7
1.3.k2
                  Estimation With Decimals




                               12.568

         Estimate the number to the nearest hundredth.


                                                     Slide 7
          Application #1
1.3.k2
                           Application



         Charlie wants to buy a new toy. The toy costs
          $14.89. Charlie’s mom gave him $15.75 to
         spend at the store. Estimate about how much
          the toy will cost and explain whether or not
                  Charlie has enough money.




                                                     Slide 8
         Concrete Example #1
1.3.k2
                               Example:




                                          Slide 9
         Step-by-Step #1
1.3.k2
                    Front-end Estimation



           Use front-end estimation to estimate the
           sum of $2.56, $3.24, $7.78, and $5.30.




                                                      Slide 10
         Step-by-Step #2
1.3.k2
                    Front-End Estimation



           Use front-end estimation to estimate the
             sum of 6.69, 7.56, 8.50, and 9.31.




                                                      Slide 11
         Step-by-Step #3
1.3.k2
             Estimation of Mixed Numbers



              Estimate each mixed number to the
              nearest whole number and write the
                   sum: 8 ¾ + 6 1/8 + 1 ½.




                                                   Slide 12

				
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