Elementary School Teaching Video - Number and Quantity(N)

Making Tasty Juice

feature: To ground students’ proportion reasoning on manipulation activity.

Systematic Factorization

feature: Eperiencing the process of prime factorization and using it to systematically find all factors of a given composite number.

Weighing Super

feature: By making, weighing, guessing, and measuring the resin clay by hand, we can cultivate a sensory weight of 600 grams or less.

Decomposing Expert

feature:Through the activities of composing and decomposing, students were asked to contruct three-dimensional shapes from cubes and to calculate the total number of the cubes.

Managing Money Like A Pro

feature:Using scenarios to combine four fundamental operations, experience the order of operatoins “doing multiplication and division before subtraction” .

Finding a Fraction Elf

feature:Using the foundation modules of “Myriad Fractions”, we develop a specific mental image of “equivalent fractions” through the operation of “Fraction Wall”; then, based on this, we explore the “numerical relationship between numerator and numerator, denominator and denominator of equivalent fractions” through activity records. The final activity of “Finding the Fraction Wizard” is to understand the value of the “equivalent” fraction family, in which the “simplest fraction” represents the parent number.

The Game of Adding and Subtracting Decimal Numbers

feature: Fractions are taught through concrete representations of Cuisenaire rods.

Play the War Game and Do the Counts

feature:Students discover the concepts of factors, multiples, and common multiples by moving pieces around the hundreds table and playing the rules of the game.

Rectangular Number

feature: Students learn the graphical meaning of exhaustive factors, prime numbers and composite numbers through Go games.

Angels and Devil

feature:Through the “Number Bingo” game and the “Rabbit and Chicken Problem”, students will learn to decode the wrong way of “solving problems by keywords” or “memorizing algorithms” and understand mathematics meaningfully through concrete symbols.

Brain Teaser for the Volume of a Shape

feature:From building blocks to wrapping cubes or rectangles in color paper, students can count the number of dots, the number of rows and layers, and estimate the size of a volume from the length, width, and height of three sides.

Finding the squares

feature:Through the contextual story “The Little Craftsman Builds a Magic Castle” and the activity of “real object collage” (finding suitable squares that can be completely collaged to fill a known rectangle), students will experience and understand the relationship between “quantity” and “number” in terms of “integer division or multiplication”, which is a good literacy-oriented mathematical inquiry activity for teaching “factor” and “common factor”.

Slapjack of Fraction

feature:Is scoring hard? From the preparation of materials for Christmas tree making (fan-shaped) to the reproduction of Christmas tree works, students are stimulated to use fractions to accurately grasp the number of materials, and the fractional heart disease board game is well versed, making the fractional fake belt swapping also very vegetarian!

Fraction Game

feature:By comparing the lengths of long score boards, the same value of scores can be found.

Getting to Know the Ratio

feature:Develop the concept of “ratio” through conversion and combination activities.