OA1: Fluently add and subtract within 20.
OA3: Apply properties of operations as strategies to add and subtract.
OA8: Solve addition and subtraction equations to find the unknown.
NBT1: Count to 120, starting at any number less than 120.
NBT2: Understand that the two digits of a two-digit number represent amounts of tens and ones.
NBT3: Compare two two-digit numbers with the symbols >, =, and <.
NBT4: Using a variety of strategies, add within 100.
NBT5: Can mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
MD3: Tell and write time in hours and half-hours using analog and digital clocks.
MD4: Organize, represent, and interpret data.