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     Sort objects by two of the following attributes: color, size, shape, and kind.  
        1.2.1 a   | 
    
        -   Virtual Goose  - You must match the egg the goose is sitting to one of the other four eggs. Caution, the eggs will have been turned.  
    
        -   Zoe's Pet Shelter  (Sesame Street) - Zoe has to group animals with similar characteristics. This will work best as a whole class activity. Caution ! This game never ends! 
     
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     Describe how objects in a group are alike and how they are different.  
        1.2.1 b   | 
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     Identify and describe growing patterns found in literature, in the environment, in physical arrangements, and in pictures.  
        1.2.2 a   | 
    
        -   Brenda's Bedroom Border  - complete a pattern  
    
        -   Patterns  - this video lesson explains patterns, and then gives your students the chance to show understanding on several quizzes.  
       
        -   What Comes Next?  - study repeating patterns and click on the one that continues the pattern  
    
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     Translate a repeating pattern from one format to another (e.g., red-blue-blue to snap-clap-clap).  
        1.2.2 b   | 
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     Create, describe, and extend concrete, visual, auditory, or number patterns.  
        1.2.2 c   | 
    
        -   Missing Numbers  - find the missing numbers in a sequence  
    
        -   What Comes Next?  - study repeating patterns and click on the one that continues the pattern  
    
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     Identify the unit of a two-part repeating pattern.  
        1.2.2 d   | 
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     Show or represent number sentences, involving addition and subtraction and numbers 0-20, with concrete objects.   | 
    
        -   Great Equations  - Drag the correct numbers to complete given equations . Students select from three or four numbers to complete number sentences.  
    
        -   Miro on the Move  - Miro the Mouse wants to visit the houses from 1 to 10, but one of the numbers is missing. Can you find which number is missing? 
 
        -   Rabbit Takeaway  - [  click Continue to play the game  ] subtraction number sentences, rabbits are shown, some run away, find the number left 
   
        -   Walrus World  - learn strategies for solving real world problems  
    
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     Use mathematical terms and symbols appropriately.  
        1.2.3 b   | 
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     Interpret and solve simple open addition sentences, including finding the missing addend.  
        1.2.3 c   | 
    
        -   Sum Sense (Addition)  - Students practice single digit addition by dragging numbers to complete the sentence. 
 
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     Apply the commutative property of addition.  
        1.2.4 a   | 
    
        -   Sum Sense (Addition)  - Students practice single digit addition by dragging numbers to complete the sentence. Students see that the order of the numbers added can be reversed giving the same sum. 
 
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     National Library of Virtual Manipulatives   | 
    
        -   Algebra  (Grades PreK-2)   
 
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