Difference between revisions of "Fractions: Addition with same denominator"

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=== Materials  ===
 
=== Materials  ===
  
*Red fraction circles in green frames (ten circles: 1 is undivided and the others are divided into 2 -10 equal parts.
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*Red fraction circles in green frames (ten circles: 1 is undivided and the others are divided into 2 -10 equal parts.  
 
*Label with fractions written on them: 1, 1/2, 1/2, 1/3  
 
*Label with fractions written on them: 1, 1/2, 1/2, 1/3  
 
*Pencil and paper  
 
*Pencil and paper  
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=== Presentation  ===
 
=== Presentation  ===
  
#Have the child bring out the two trays.
+
#Have the child bring out the two trays.  
#Write two fractions (with the same denominator): 2/6 + 3/6 =
+
#Write two fractions (with the same denominator): 2/6 + 3/6 =  
 
#Show the child that we first take out 1/6 two times (2/6).  
 
#Show the child that we first take out 1/6 two times (2/6).  
 
#Place these in front of the tray.  
 
#Place these in front of the tray.  
 
#Then take out 1/6 three times (3/6).  
 
#Then take out 1/6 three times (3/6).  
 
#Have the child count how many 1/6 there are. (5)  
 
#Have the child count how many 1/6 there are. (5)  
#Show the child how to write the answer as shown: 2/6 + 3/6 = 5/6
+
#Show the child how to write the answer as shown: 2/6 + 3/6 = 5/6  
 
#Read the whole equation with the child.  
 
#Read the whole equation with the child.  
 
#Write another addition problem and have the child do it.  
 
#Write another addition problem and have the child do it.  
 
#After a few equations, point out to the child that "we can only add fractions with the same denominator". For example: 2/4 + 1/4 = 3/4
 
#After a few equations, point out to the child that "we can only add fractions with the same denominator". For example: 2/4 + 1/4 = 3/4
  
 
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Revision as of 20:58, 1 June 2009

Age

4 1/2.

Materials

  • Red fraction circles in green frames (ten circles: 1 is undivided and the others are divided into 2 -10 equal parts.
  • Label with fractions written on them: 1, 1/2, 1/2, 1/3
  • Pencil and paper
  • Skittles

Preparation

This is an individual presentation.

Presentation

  1. Have the child bring out the two trays.
  2. Write two fractions (with the same denominator): 2/6 + 3/6 =
  3. Show the child that we first take out 1/6 two times (2/6).
  4. Place these in front of the tray.
  5. Then take out 1/6 three times (3/6).
  6. Have the child count how many 1/6 there are. (5)
  7. Show the child how to write the answer as shown: 2/6 + 3/6 = 5/6
  8. Read the whole equation with the child.
  9. Write another addition problem and have the child do it.
  10. After a few equations, point out to the child that "we can only add fractions with the same denominator". For example: 2/4 + 1/4 = 3/4



Control Of Error

The Directress.

Points Of Interest


Purpose


Variation


Links


Handouts/Attachments