3年生数学パート1/4: 足し算と引き算

About this class
🌸 Unit 1:  This unit focuses on the following question: How are numbers read, written, compared, ordered, and rounded using place value?
🌸 Unit 2: This unit focuses on the following questions:  How can sums and differences be estimated and found mentally? Can addition and subtraction be done on the number line?
🌸 Unit 3: This unit focuses on the following questions: How are numbers read, written, compared, ordered, and rounded using place value?
🌸 Unit 4: This unit focuses on the following question: What are different meanings of multiplication, including how addition and multiplication are related?

 📆How is this class structured?
This is a flex unit. I will post new instructional materials each week. The duration of each video is 7-10 min long. Students are expected to watch the video provided and answer the quiz that follows the instruction. 

🚨Can I earn credit for this class?
Students who complete the full course (and their assignments) can submit this documentation and apply for credit at their local school. Many schools also offer an option to test out of this class and place into other higher math units.

🚨I struggle in math, can I join this class? 
Absolutely! Remediating students in math is one of my specialties. 

🎓 About the instructor
I come to you with over 15 years of experience in STEM education. I am a certified educator in 6 different States. I hold a Bachelor's Degree of Science with distinguished honors. In addition, I hold a Masters Degree Science Education and Doctorate of Philosophy in Teaching Learning and Culture with a specialization in Science and Mathematics Education. You never stop learning! 
I became a teacher by choice. Teaching young minds has been one of the best things that has happened to me. I love to learn as much as I love to teach!

 📆Class assignments
Each lesson is followed by an optional assignment that will help students to reinforce the concepts learned during class. 

👏🏻Assessments
Summative assessments will be optional and available to students. The goal is to provide students with exposure to what a standardized assessment looks like without adding the anxiety that comes with testing. Student achievement will be measured formatively in the form of discussions, and assignments.

🚨Additional Resources
You need two things for this class: A notebook and a pencil. Dr. V. will provide you with access to readings, slide decks, vocabulary lists, and practice problems after each class. 

🚨Who normally takes this class?
This class is for students who have completed 2nd grade math.

Here are the Units that I will cover in this class: 

🌸Unit 1: Numeration
Lesson 1.1: Representing Numbers
Lesson 1.2: Ways to Name Numbers
Lesson 1.3: Greater Numbers
Lesson 1.4: Place Value Relationships
Lesson 1.5: Comparing Numbers
Lesson 1.6: Ordering Numbers
Lesson 1.7: Counting Numbers
Lesson 1.8: Rounding on the Number Line
Lesson 1.9: Problem Solving: Writing to Explain


🌸Unit 2: Number Sense: Adding and Subtracting Whole Numbers
Lesson 2.1: Addition Properties
Lesson 2.2: Using Mental Math to Add
Lesson 2.3: Using Mental Math to Subtract
Lesson 2.4: Estimating Sums
Lesson 2.5: Estimating Differences
Lesson 2.6: Relating Addition and Subtraction
Lesson 2.7: Adding and Subtracting on a Number Line
Lesson 2.8: Problem Solving: Use Representations

🌸Unit 3: Developing Proficiency: Adding and Subtracting Whole
Lesson 3.1: Adding with an Expanded Algorithm
Lesson 3.2: Models for Adding 3-Digit Numbers
Lesson 3.3: Adding 3-Digit Numbers
Lesson 3.4: Adding 3 or More Numbers
Lesson 3.5: Subtracting with an Expanded Algorithm
Lesson 3.6: Models for Subtracting 3-Digit Numbers
Lesson 3.7: Subtracting 3-Digit Numbers
Lesson 3.8: Subtracting Across Zero
Lesson 3.9: Problem Solving: Draw a Strip Diagram, Write an Equation

🌸Unit 4: Multiplication Meanings
Lesson 4.1: Multiplication as Repeated Addition
Lesson 4.2: Arrays and Multiplication
Lesson 4.3: Skip Counting on the Number Line
Lesson 4.5: Writing Multiplication Stories
Lesson 4.6: Problem Solving: Two-Step Problems