Pennsylvania Core Standards

Pennsylvania 1st grade math standards

Every 1st grade math standard in the Pennsylvania Core Standards for Mathematics, in Pennsylvania's order, with the Lux lessons that teach it.

Number and Operations in Base Ten

CC.2.1.1.B.1
Extend the counting sequence to read and write numerals to represent objects.
Taught inCounting on and back to 120 The end of a row
CC.2.1.1.B.2
Use place-value concepts to represent amounts of tens and ones and to compare two digit numbers.
Taught inTens and ones Fifteen is not 51 Expanded form counts tens Many ways to make a numberand 4 more
CC.2.1.1.B.3
Use place-value concepts and properties of operations to add and subtract within 100.
Taught inOne more, ten more Ten more changes the tens Adding ones to a two-digit number Get to the next tenand 2 more

CC.2.2.1.A.1
Represent and solve problems involving addition and subtraction within 20.
Taught inRead the story first Act out the story How many were added?How many at the start?and 3 more
CC.2.2.1.A.2
Understand and apply properties of operations and the relationship between addition and subtraction.
Taught inSubtraction is a missing part Any order, same total Find the ten first Facts that go togetherand 1 more

CC.2.3.1.A.1
Compose and distinguish between two- and three- dimensional shapes based on their attributes.
Taught inSides and corners Turned is still a triangle Solid shapes Not every box is a cubeand 4 more
CC.2.3.1.A.2
Use the understanding of fractions to partition shapes into halves and quarters.
Taught inHalves and fourths Equal parts only Many ways to make halves

CC.2.4.1.A.1
Order lengths and measure them both indirectly and by repeating length units.
Taught inLonger, shorter, longest Compare with a third thing Inches and centimeters don’t mix Measure with paper clipsand 2 more
CC.2.4.1.A.2
Tell and write time to the nearest half hour using both analog and digital clocks.
Taught inTime to the hour Time to the half hour The short hand tells the hour The 6 means 30 minutes
CC.2.4.1.A.4
Represent and interpret data using tables/charts.
Taught inTally marks in fives The fifth mark crosses Making a pictograph Reading a pictographand 2 more

Lux sees your kid's page, asks one question at a time, and checks each step, in Pennsylvania's order.