IXL Math - South Dakota first-grade math standards

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South Dakota

Skills available for South Dakota first-grade math standards

Standards are in black and IXL math skills are in blue. Hold your mouse over the name of a skill to view a sample problem. Click on the name of a skill to practice that skill.

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1.A Algebra

1.A.2 Use a variety of algebraic concepts and methods to solve equations and inequalities.
1.A.2.1 Students are able to use the concepts and language of more, less, and equal (greater than and less than) to compare numbers and sets (0 to 20).
1.A.2.2 Students are able to solve open addition and subtraction sentences with one unknown (__) using numbers equal to or less than 10.
1.A.3 Interpret and develop mathematical models.
1.A.3.1 Students are able to write number sentences from problem situations using "+" or "-", and "=" with numbers to ten.
- Mixed operations: Which sign makes the number sentence true? (First grade - F.2)
1.A.4 Describe and use properties and behaviors of relations, functions and inverses.
1.A.4.1 Students are able to identify and extend repeating patterns containing multiple elements using objects and pictures.
- Patterns: Recognize patterns (First grade - O.1)
- Patterns: Describe patterns (First grade - O.2)
1.A.4.2 Students are able to determine common attributes in a given group and identify those objects that do not belong.
- Geometry: Same shape (First grade - J.12)

1.G Geometry

1.G.1 Use deductive and inductive reasoning to recognize and apply properties of geometric figures.
1.G.1.1 Students are able to describe characteristics of plane figures.
1.G.1.2 Students are able to sort basic three-dimensional figures.
1.G.2 Use properties of geometric figures to solve problems from a variety of perspectives.
1.G.2.1 Students are able to describe proximity of objects in space.

1.M Measurement

1.M.1 Apply measurement concepts in practical applications.
1.M.1.1 Students are able to tell time to the half-hour using digital and analog clocks and order a sequence of events with respect to time.
1.M.1.2 Find a date on the calendar.
- Time: Read a calendar (First grade - R.11)
- Time: Months of the year (First grade - R.12)
1.M.1.3 Students are able to use different combinations of pennies, nickels, and dimes to represent money amounts to 25 cents.
1.M.1.4 Students are able to estimate weight using non-standard units of measure.
1.M.1.5 Students are able to identify appropriate measuring tools for length, weight, capacity, and temperature.
1.M.1.6 Students are able to compare and order concrete objects by temperature and capacity.

1.N Number Sense

1.N.1 Analyze the structural characteristics of the real number system and its various subsystems. Analyze the concept of value, magnitude, and relative magnitude of real numbers.
1.N.1.1 Students are able to read, write, count, and order numerals to 50.
1.N.1.2 Students are able to use unit fraction models to create parts of a whole.
1.N.2 Apply number operations with real numbers and other number systems.
1.N.2.1 Students are able to solve addition and subtraction problems with numbers 0 to 20 written in horizontal and vertical formats using a variety of strategies.
1.N.3 Develop conjectures, predictions, or estimations to solve problems and verify or justify the results.
1.N.3.1 Students are able to solve addition and subtraction problems up to 20 in context.

1.S Statistics and Probability

1.S.1 Use statistical models to gather, analyze, and display data to draw conclusions.
1.S.1.1 Students are able to display data in simple picture graphs with units of one and bar graphs with intervals of one.
- Data and graphs: Record data with tally charts, picture graphs, tables (First grade - L.1)
1.S.1.2 Students are able to answer questions from organized data.
1.S.2 Apply the concepts of probability to predict events/outcomes and solve problems.
1.S.2.1 Students are able to recognize whether the outcome of a simple event is possible or impossible.
- Probability and statistics: More, less, and equally likely (First grade - P.1)
- Probability and statistics: Certain, probable, unlikely, and impossible (First grade - P.2)