MathSamurai: Mental Math - Tips and Tricks to Becoming a Master of Mental Math
This course equips learners with powerful mental math techniques, boosting confidence and speed in everyday calculations. No prior knowledge required—just a willingness to have fun with numbers!
Mr. Payne | ペイン先生 | 華流清先生
Average rating:
4.9
Number of reviews:(376)
Star Educator
What's included
2 live meetings
1 hrs 50 mins in-class hoursHomework
1-2 hours per week. The homework assigned between the two sessions will consist of practice problems and mental math challenges, designed to reinforce the techniques covered in Session 1. Learners will spend about one hour working through these exercises, which include quick addition, subtraction, multiplication, and division tasks, as well as real-world scenarios requiring mental estimation. These problems are aimed at boosting speed and accuracy in mental calculations, and learners will be expected to turn them in for review prior to Session 2.Certificate of Completion
Certificate of Completion for attending both sessions and active participation. Certificate of Excellence for excelling in class activities and demonstrating advanced mastery of techniques through homework.Class Experience
US Grade 4 - 7
Beginner - Intermediate Level
In this two-session course, learners will be taught mental math strategies that can be applied both in and outside the classroom. Topics covered include rapid addition, subtraction, multiplication, and division, as well as tricks for estimating and solving real-world problems. Each session begins with a short, interactive lecture introducing new concepts, followed by hands-on activities such as group games, live challenges, and discussions. Learners will interact frequently with the teacher and peers through problem-solving exercises and math-based games, fostering a fun and engaging learning environment.
Learning Goals
Learners will master mental math techniques for basic arithmetic operations.Learners will gain skills to quickly estimate solutions to real-world problems (e.g., tips, discounts).
Syllabus
Curriculum
Follows Teacher-Created CurriculumStandards
Aligned with Common Core State Standards (CCSS)2 Lessons
over 2 WeeksLesson 1:
Session 1
・ Introduction to Mental Math: What it is and why it’s useful
・ Tricks for adding and subtracting quickly
・ Techniques for multiplying large numbers in your head
・ Group exercises and practice problems 55 mins online live lesson
Lesson 2:
Session 2
・ Divisibility rules and shortcuts for fast division
・ Estimation skills: getting the right answer, fast
・ Real-world applications (tips, discounts, quick estimations)
・ Mental math games and challenges to reinforce learning 55 mins online live lesson
Other Details
Parental Guidance
This course will use Blooket as a fun, interactive platform for reviewing mental math skills during class. Blooket is an educational game tool that requires parental approval. No account creation is necessary for learners.
Pre-Requisites
Learners should have a basic understanding of arithmetic, including addition, subtraction, multiplication, and division with whole numbers. Familiarity with these operations will help them build on the mental math techniques taught in this
Supply List
・ A notebook or scratch paper for calculations ・ A pencil
External Resources
In addition to the Outschool classroom, this class uses:
Joined February, 2019
4.9
376reviews
Star Educator
Teacher expertise and credentials
Colorado Teaching Certificate in Mathematics
Bachelor's Degree in Philosophy from Gustavus Adolphus College
Mr. Kelsey's main areas of focus are in math, logic, philosophy, and Japanese studies. He holds a BA with Honors in Philosophy (with concentrations in Religious and Japanese Studies) and is certified in the Praxis II 5161 (Mathematics: Content Knowledge).
Mr. Kelsey has 5+ years teaching experience of mathematics and other subjects in public schools and private instruction from children through seniors. His extensive work in tutoring middle school, high school, college, and continuing education students (over 1,260 hours), as well as instilling his passion for mathematics, science, language, and philosophy in his students, has earned him a 5.0-star rating (out of about 450 ratings) on Wyzant in addition to his past popularity on Outschool.Reviews
Live Group Class
$24
weekly1x per week, 2 weeks
55 min
Live video meetings
Ages: 10-14
4-8 learners per class
