
present a one-page grade one math summary aligned with US and Canada standards. cover place value from 0 to 120, and addition and subtraction within 20, regrouping, measurement and data.
Explains place value for first grade, covering ones and tens places, counting 0–120, identifying missing numbers, and comparing two-digit numbers with greater than, less than, and ordering practices.
Explore addition and subtraction within 20, using plus and minus signs, understand their relation, and solve apples-based word problems.
Learn two-digit addition by adding tens and ones, understanding place value, practicing vertical addition, breaking apart numbers, and regrouping tens to carry for totals.
Explore measurement, data, and geometry for first graders. Learn to compare lengths, use rulers and squares, read time, read bar graphs, and recognize shapes and polygons including halves and quarters.
Welcome to this course.
The Math in Grade 1 will be summarized in this video course in around 1 hour.
This lecture (pdf document) will be shared with you.
This course is based on the Math in Grade 1 in the US and Canada.
This summary course is for you if you are:
A mom or dad who is teaching your kid in Grade 1 but is not sure what the Math in Grade 1 is mainly about, or,
A grade 1 student who wants to learn and summarize the Math in Grade 1.
The updates of this course are as below:
2023.10.22 Published.
2023.10.22 The definition of "Place value" is added to Section 1.2 "Place value".
The content of this course is as below:
1 Place value
1.1 Numbers 0 to 120
1.2 Ones place and tens place
1.3 Comparing 2-digit numbers
2 Addition and subtraction
2.1 Addition within 20
2.2 Subtraction within 20
2.3 Relate addition and subtraction
2.4 Equal sign
2.5 Missing number within 20
2.6 Word problems within 20
2.7 Word problems with "more" and "fewer"
2.8 Adding 1s and 10s
2.9 Intro to addition with 2-digit numbers
3 Measurement, data, and geometry
3.1 Length and size
3.2 Bar graphs
3.3 Time
3.4 Shapes
3.5 Fractions of shapes