Grade+1+Standards

**Grade 1 Standards**
 **1.0 Students understand and use numbers up to 100:**
 * Mathematics Content Standards**
 * Number Sense**

Interactive Hundreds Chart/Pattern Calculator : http://standards.nctm.org/document/eexamples/chap4/4.5/index.htm

1.1 Count, read, and write whole numbers to 100.

1.2 Compare and order whole numbers to 100 by using the symbols for less than, equal to, or greater than (<, =, >).

1.3 Represent equivalent forms of the same number through the use of physical models, diagrams, and number expressions (to 20) (e.g., 8 may be represented as 4 + 4, 5 + 3, 2 + 2 + 2 + 2, 10 -2, 11 -3).

1.4 Count and group object in ones and tens (e.g., three groups of 10 and 4 equals 34, or 30 + 4).

1.5 Identify and know the value of coins and show different combinations of coins that equal the same value. 2.1 Know the addition facts (sums to 20) and the corresponding subtraction facts and commit them to memory.
 * 2.0 Students demonstrate the meaning of addition and subtraction and use these operations to solve problems:**

2.2 Use the inverse relationship between addition and subtraction to solve problems.

2.3 Identify one more than, one less than, 10 more than, and 10 less than a given number.

2.4 Count by 2s, 5s, and 10s to 100.

2.5 Show the meaning of addition (putting together, increasing) and subtraction (taking away, comparing, finding the difference).

2.6 Solve addition and subtraction problems with one-and two-digit numbers (e.g., 5 + 58 = __).

2.7 Find the sum of three one-digit numbers.
 * 3.0 Students use estimation strategies in computation and problem solving that involve numbers that use the ones, tens, and hundreds places:**

Estimation Lesson Videos: http://standards.nctm.org/document/eexamples/chap4/4.6/index.htm

3.1 Make reasonable estimates when comparing larger or smaller numbers. **1.0 Students use number sentences with operational symbols and expressions to solve problems:** 1.1 Write and solve number sentences from problem situations that express relationships involving addition and subtraction.
 * Algebra and Functions**

1.2 Understand the meaning of the symbols +, -, =.

1.3 Create problem situations that might lead to given number sentences involving addition and subtraction. Henry and Mudge and the Careful Cousin; problem-solving strategies, addition, and algebra:

**1.0 Students use direct comparison and nonstandard units to describe the measurements of objects:** 1.1 Compare the length, weight, and volume of two or more objects by using direct comparison or a nonstandard unit.
 * Measurement and Geometry**

1.2 Tell time to the nearest half hour and relate time to events (e.g., before/after, shorter/longer). 2.1 Identify, describe, and compare triangles, rectangles, squares, and circles, including the faces of three-dimensional objects.
 * 2.0 Students identify common geometric figures, classify them by common attributes, and describe their relative position or their location in space:**

2.2 Classify familiar plane and solid objects by common attributes, such as color, position, shape, size, roundness, or number of corners, and explain which attributes are being used for classification.

2.3 Give and follow directions about location.

2.4 Arrange and describe objects in space by proximity, position, and direction (e.g., near, far, below, above, up, down, behind, in front of, next to, left or right of). **1.0 Students organize, represent, and compare data by category on simple graphs and charts:** 1.1 Sort objects and data by common attributes and describe the categories.
 * Statistics, Data Analysis, and Probability**

1.2 Represent and compare data (e.g., largest, smallest, most often, least often) by using pictures, bar graphs, tally charts, and picture graphs. 2.1 Describe, extend, and explain ways to get to a next element in simple repeating patterns (e.g., rhythmic, numeric, color, and shape).
 * 2.0 Students sort objects and create and describe patterns by numbers, shapes, sizes, rhythms, or colors:**

Electronic Pattern Making: http://standards.nctm.org/document/eexamples/chap4/4.1/index.htm


 * Mathematical Reasoning**

Henry and Mudge and the Careful Cousin; problem-solving strategies, addition, and algebra:

**1.0 Students make decisions about how to set up a problem:** 1.1 Determine the approach, materials, and strategies to be used.

1.2 Use tools, such as manipulatives or sketches, to model problems. 2.1 Explain the reasoning used and justify the procedures selected.
 * 2.0 Students solve problems and justify their reasoning:**

2.2 Make precise calculations and check the validity of the results from the context of the problem.
 * 3.0 Students note connections between one problem and another.**