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https://www.ixl.com/math/grade-1/place-value-models-up-to-20

This game has students recalling how numbers are represented in base en blocks. It can be used as a tool to practice getting faster at identifying numbers represented by base ten blocks. This website allows the teacher to track the student's progress on their understanding and can be used to move up the Bloom's Taxonomy pyramid by increasing the difficulty of the math games.

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Understand place value. CCSS.MATH.CONTENT.1.NBT.B.2
Understand that the two digits of a two-digit number represent amounts of tens and ones.

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Number Pieces Basic, by the Math Learning Center 

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Number Pieces Basic, by the Math Learning Center 

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This app allows student to apply their knowledge of place value by grouping, regrouping, adding, and subtracting. It also allows for students to label things to show they understand place value. What is useful about this app is that it allows the teacher to create problems for their students and familiarizes students with using base ten blocks. This is a great tool for a teacher who does not have a lot of physical base ten blocks but wants his/her students to get used to using that manipulative

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https://www.mathplayground.com/pop_penguin_and_the_place_value_race/index.html
This website offers a variety of games that are categorized by grade and math concept. Pop Penguin focuses on place value and asks many open ended questions that help the student explore the relationships between the numbers as well as compare, contrast, and categorize. This website offers a huge selection of games that are uniquely different but at the same time still related to the math concept. This is good because it caters to a variety of students.

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http://www.free-training-tutorial.com/math-games/place-value-jumble-digits.html
This game helps students see the importance of place value through evaluating different numbers in various multiple choice answers. This is good because it challenges the student to go beyond the tens digit and explore the relationships between the place values.

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http://www.abcya.com/base_ten.htm
This resource can be used to have students practice putting together numbers using base ten blocks. This tool can be used in a number of ways from students making up numbers and quizzing each other over how to represent the numbers to teachers asking the student to show them how they would break down a number.