Free 1st grade math video lessons
This is a collection of free math videos for 1st grade, showing varied exercises for each topic. You can view them here on my site or at my YouTube channel (www.youtube.com/user/mathmammoth). The videos match Math Mammoth Grade 1 curriculum but will also work no matter which curriculum you follow (in other words, the videos don't rely on you having Math Mammoth curriculum).
These videos are usable for students, teachers, and parents. You can use them...
- To learn these topics yourself (if you're a student for example, or an adult needing a refresher)
- As lesson plans for teaching these topics. Often, one video from below can be made into several lessons with students.
Please choose a topic from the list.
Chapter 1: Addition of single-digit numbers
Addition with missing numbers (missing addend)
Addition facts within 10 — six videos matching the lessons titled "Sums with 5", "Sums with 6", "Sums with 7", "Sums with 8", "Sums with 9", and "Sums with 10".
Comparisons – compare numbers and sums
Chapter 2: Subtraction and related concepts
Subtraction and Addition in the Same Picture – the connection between subtraction and addition
Two subtractions from one addition
The concept of "how many more"
"How many more" problems and differences
Chapter 3: Place value
Naming and writing 2-digit numbers
Add and subtract whole tens (e.g. 20 + 70 or 80 − 40)
Chapter 4: Addition & subtraction facts
Addition and subtraction facts with 6 (fact families)
Addition and subtraction facts with 7 (fact families)
Addition and subtraction facts with 8 (fact families)
Addition and subtraction facts with 9 (fact families)
Chapter 5: Time
Whole and half hours (telling time using only the hour hand)
Minutes and half hours (the minute hand is introduced)
AM and PM (morning and afternoon) hours
Chapter 6: Shapes and Measuring
Halves, quarters — and thirds too!
Measuring in whole centimeters
Chapter 7: Addition and subtraction of two-digit numbers
Adding without carrying – add a 2-digit number and a single-digit number mentally - no regrouping
Add and subtract two-digit numbers – without regrouping
"Make ten" (and go over ten) strategy for addition
A mental math trick with nine and eight