In this 1st grade lesson, we add and subtract two-digit numbers WITHOUT regrouping (no carrying nor borrowing). First we do that with a help of a visual model, and then "in boxes", or by writing one number under the other, and then adding/subtracting the ones and the tens.
We also solve several word problems. The first one is challenging, but the visual model (boxes for tens and dots for ones) helps us to solve it easily.
Check out my other math videos for first grade at http://www.mathmammoth.com/videos/grade_1/1st-grade-math-videos.php
Tagged under: 1st grade,math,addition,subtraction,-digit addition,-digit subtraction,word problems,tens
Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.
Add multiple choice quizzes, questions and browse hundreds of approved, video lesson ideas for Clip
Make YouTube one of your teaching aids - Works perfectly with lesson micro-teaching plans
1. Students enter a simple code
2. You play the video
3. The students comment
4. You review and reflect
* Whiteboard required for teacher-paced activities
With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.
Carry out a quickfire formative assessment to see what the whole class is thinking
Create interactive presentations to spark creativity in class
Student teams can create and share collaborative presentations from linked devices
Turn any public video into a live chat with questions and quizzes