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# 2nd Grade Algebra Skills Prior Standards Implementation

## Algebra

Sort objects by two or more attributes.
2.2.1 a
Identify the rules by which objects or numbers have been sorted.
2.2.1 b
1. Ambleweb Function Machine - students identify what process was used to produce a sequence of numbers (twelve processes available)
Extend a growing pattern, involving objects, shapes, or numbers.
2.2.2 a
1. Brenda's Bedroom Border - complete a pattern
2. Christmas Lights - identify and complete patterns
3. Create your own pattern - drag shapes to create a pattern.
4. Help Caillou Build a Train Track - When Caillou asks "Do you want to play with me?", click on the train. Match patterns of track pieces to let the passengers get to the train station.
5. Missing Numbers - find the missing numbers in a sequence
6. Number Cracker - guess what number comes next in the pattern
7. Patterns - this video lesson explains patterns, and then gives your students the chance to show understanding on several quizzes.
8. Spooky Sequences - One of the ghosts is missing a number. Click on the numbers along the bottom to enter the right number in the sequence. ( square numbers )
9. Spooky Sequences - One of the ghosts is missing a number. Click on the numbers along the bottom to enter the right number in the sequence. (triangular numbers)
10. Spooky Sequences - One of the ghosts is missing a number. Click on the numbers along the bottom to enter the right number in the sequence. one digit numbers (by ones ) | two digit numbers (by ones) | three digit numbers (by ones) | counting by twos | counting by fives | counting by tens | backward by ones | backward by twos | backward by fives | backward by tens
11. Super Sequencer - Input the starting number of a sequence, the increment (amount of change), and then select the speed with which the next numbers will be displayed. an your students predict the next number?
12. What Comes Next? - study repeating patterns and click on the one that continues the pattern
13. Wolf, Goat, and Cabbage - Old Russian Puzzle: You have to carry a wolf, a goat, and a cabbage across a river.
Identify the unit of a three-part repeating pattern.
2.2.2 b
Translate a repeating pattern from one format to another (e.g., red-blue-blue to snap-clap-clap).
2.2.2 c
Determine the output number for a particular input number given a one-operation rule involving addition or subtraction.
2.2.2 d
1. Ambleweb Function Machine - students identify what process was used to produce a sequence of numbers (twelve processes available)
Interpret and solve open sentences that involve addition or subtraction.
2.2.3 a
1. My Backpack - Students add columns and find missing addends using data generated from a chart.
2. Sum Sense (Addition) - Students practice single digit addition by dragging numbers to complete the sentence.
3. Sum Sense (Subtraction) - Students practice single digit subtraction by dragging numbers to complete the sentence.
4. Walrus World - learn strategies for solving real world problems
Communicate and use mathematical terms and symbols appropriately.
2.2.3 b
Show or represent number sentences, involving addition and subtraction and numbers 0-20, with concrete objects.
2.2.3 c
1. Matching Pictures to Number Sentences - study each picture and then click on the number sentence that describes the picture
Demonstrate knowledge of and use the commutative property of addition.
2.2.4 a
Show that subtraction is not commutative.
2.2.4 b
Apply the addition and subtraction properties of 0 (adding or subtracting 0 doesn't change a given number).
2.2.4 c
Describe qualitative change (e.g., a student growing taller).
2.2.5 a
Describe quantitative change (e.g., a student growing 2 inches in 1 year).
2.2.5 b

## Review Help

Practice Tests
Interactive Practice Games
1. Number Gym - This software company provides games as demonstration copies of their commercial product. All games are labeled "Demonstration" but are working copies and can be used by your students.
Daily Questions
1. Daily Questions - to be given three times per week to serve as a ten to fifteen minute (approximate) review of practice test items and critical thinking (a 134 page document)
1. Measurement - Measurement - Graphs and Data
National Library of Virtual Manipulatives
1. Algebra (Grades Pre-K - 2)
 site for teachers | PowerPoint show | Acrobat document | Word document | whiteboard resource | sound | video format | interactive lesson | a quiz | lesson plan | to print

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