Add & Subtract within 100
Learn column addition and subtraction within 100: line up the place values and start from the ones. Carry one ten when the ones overflow, and borrow one ten when the ones are not enough.
Times Tables
Understand what multiplication means: repeated addition of the same number writes as multiplication, and reading dot arrays by rows or columns shows that swapping factors keeps the product.
Units of Length
Meet centimeters and meters: learn to measure with a ruler, know that 1 meter = 100 centimeters, and pick the right unit for different objects.
First Look at Angles
See what makes an angle: one vertex and two arms (sides). Open and close the angle to feel how its size depends on the opening, then learn to tell acute, right and obtuse angles apart.
Telling Time
Read the clock face: know the hour and minute hands, understand 1 hour = 60 minutes, and tell time to five minutes.
Numbers within 1000
Meet the hundreds place: build three-digit numbers from hundreds, tens, and ones, skip-count by 2s, 5s, 10s, and 100s, and compare two 3-digit numbers.