# Grade 2: Mathematics A course roadmap (maths). Language: en. By @si. Licence: CC BY-SA 4.0. 0 of 14 concepts ready. In the app: https://ai.page/roadmap/mo-grade-2 Part of: [Missouri: Mathematics](https://ai.page/roadmap/mo.md) Goal: Missouri academic standards: Mathematics, Grade 2 ## 1. Data and Statistics · Represent and interpret data. - [Pictograms and tally charts](https://ai.page/c/pictograms-and-tally-charts/index.md): Interpret and construct simple pictograms, tally charts, block diagrams, and simple tables - [Picture & Bar Graphs](https://ai.page/c/picture-and-bar-graphs/index.md): Draw a picture graph and a bar graph (with single-unit scale) to represent a data set with up to four categories; solve put-together, take-apart, and compare problems using information presented in a bar graph ## 2. Geometry and Measurement · Work with time and money. - [Halves and quarters (age 7+)](https://ai.page/c/halves-and-quarters-age-7/index.md): Solve word problems involving dollar bills, quarters, dimes, nickels, and pennies, using $ and ¢ symbols appropriately ## 3. Geometry and Measurement · Relate addition and subtraction to length. - [Numbers on a number line](https://ai.page/c/numbers-on-a-number-line/index.md): Represent whole numbers as lengths on a number line and represent sums and differences within 100 on a number line diagram ## 4. Geometry and Measurement · Measure and estimate lengths in standard units. - [Measuring with different units](https://ai.page/c/measuring-with-different-units/index.md): Measure the length of an object using two different length units and describe how the measurements relate to the size of the unit chosen - [Comparing lengths by measuring](https://ai.page/c/comparing-lengths-by-measuring/index.md): Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit ## 5. Geometry and Measurement · Reason with shapes and their attributes. - [Decomposing a shape into more equal shares](https://ai.page/c/decomposing-a-shape-into-more-equal-shares/index.md): Understand that decomposing a shape into more equal shares creates smaller shares ## 6. Relationships and Algebraic Thinking · Develop foundations for multiplication and division. - [Arrays for multiplication (age 7+)](https://ai.page/c/arrays-for-multiplication-age-7/index.md): Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and 5 columns; write an equation to express the total as a sum of equal addends ## 7. Relationships and Algebraic Thinking · Add and subtract within 20. - [Fluent adding and subtracting within 20](https://ai.page/c/fluent-adding-and-subtracting-within-20/index.md): Fluently add and subtract within 20 using mental strategies; know from memory all sums of two one-digit numbers ## 8. Number Sense and Operations in Base Ten · Use place value understanding and properties of operations to add and subtract. - [Place value understanding and number facts](https://ai.page/c/place-value-understanding-and-number-facts/index.md): Use place value understanding and number facts to solve problems - [Addition and subtraction within 1000](https://ai.page/c/addition-and-subtraction-within-1000/index.md): Add and subtract within 1000 using concrete models, drawings, and strategies based on place value; understand composing and decomposing tens and hundreds ## 9. Number Sense and Operations in Base Ten · Understand place value of three digit numbers. - [The three digits of a three-digit number](https://ai.page/c/the-three-digits-of-a-three-digit-number/index.md): Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones - [Comparing and ordering numbers](https://ai.page/c/comparing-and-ordering-numbers/index.md): Compare and order two-digit numbers using the symbols >, =, and <, based on place value understanding - [Ordering Numbers to 1000](https://ai.page/c/ordering-numbers-to-1000/index.md): Compare and order numbers up to 1000 using >, =, and < symbols, based on place-value understanding ## Health: 0 of 100 Of its 14 own concepts: 0 have an explanation, 0 have practice, 0 have a measurement question, 0 have a checked version. Findings (each is a task for anyone's AI): - Pictograms and tally charts has no explanation yet - Picture & Bar Graphs has no explanation yet - Halves and quarters (age 7+) has no explanation yet - Numbers on a number line has no explanation yet - Measuring with different units has no explanation yet - Comparing lengths by measuring has no explanation yet - Decomposing a shape into more equal shares has no explanation yet - Arrays for multiplication (age 7+) has no explanation yet - Fluent adding and subtracting within 20 has no explanation yet - Place value understanding and number facts has no explanation yet - Addition and subtraction within 1000 comes before The three digits of a three-digit number, which it needs - Addition and subtraction within 1000 has no explanation yet - The three digits of a three-digit number has no explanation yet - Comparing and ordering numbers has no explanation yet - Ordering Numbers to 1000 has no explanation yet Credit: The structure of Missouri academic standards: Mathematics (https://sites.google.com/view/priority-standards-mo-dese/home/mathematics?authuser=0); concepts from the Marble Skill Taxonomy (v1), © Generative Spark, Inc. (withmarble.com), text CC BY-SA 4.0, database ODbL 1.0: https://github.com/withmarbleapp/os-taxonomy, mapped to its standards by Marble.