Search Results

You are looking at 1 - 9 of 9 items for

  • Author or Editor: Cheng-Yao Lin x
  • Refine by Access: All content x
Clear All Modify Search
Restricted access

Teaching Multiplication Algorithms from Other Cultures

Cheng-Yao Lin

Different multiplication algorithms are known from different cultures. For example, the Hindus used a vertical and crosswise method; the Egyptians and Russian peasants used doubling; the Japanese used an abacus; and the Chinese used counting rods. These methods and techniques have been used to help people around the world in their daily lives, for example, in building houses, counting agricultural products, or conducting commercial transactions in the marketplace.

Restricted access

GPS: Hopping into Fractions

Kelly Hagan and Cheng-Yao Lin

This is the final GPS document for February 2020

Restricted access

GPS: Popsicle Place Value and Polynomials

Kelly Hagan and Cheng-Yao Lin

Growing Problem Solvers provides four original, related, classroom-ready mathematical tasks, one for each grade band. Together, these tasks illustrate the trajectory of learners’ growth as problem solvers across their years of school mathematics.

Restricted access

GPS: Gopher Tunnel Probability

Kelly Hagan and Cheng-Yao Lin

Restricted access

GPS: Astronomy

Cheng-Yao Lin and Aviva Hamavid

Growing Problem Solvers provides four original, related, classroom-ready mathematical tasks, one for each grade band. Together, these tasks illustrate the trajectory of learners’ growth as problem solvers across their years of school mathematics.

Restricted access

GPS: Place-Value Penguins

Cheng-Yao Lin and Aviva Hamavid

Growing Problem Solvers provides four original, related, classroom-ready mathematical tasks, one for each grade band. Together, these tasks illustrate the trajectory of learners’ growth as problem solvers across their years of school mathematics.

Restricted access

GPS: Spring Frogs

Kelly Hagan and Cheng-Yao Lin

April 2020's GPS department provides tasks for each grade band that invite students to reason with age-appropriate number theoretic concepts.

Restricted access

GPS: Diving into Dolphin Data

Rebecca Robichaux-Davis, Cheng-Yao Lin, Jennifer M. Bay-Williams, and Aviva Hamavid

Growing Problem Solvers provides four original, related, classroom-ready mathematical tasks, one for each grade band. Together, these tasks illustrate the trajectory of learners’ growth as problem solvers across their years of school mathematics.

Restricted access

Mathematical Roots: The Mystery of the Disappearing Calculators

Cheng-Yao Lin, Joshua K. Lemons, Morgan E. Moser, and Melissa A. Smith

Cryptology is a branch of science dealing with secret communications (Krystek 2000). The word cryptology is derived from the Greek word kryptos, meaning “hidden,” and logos, meaning “word.” Communicating through hidden messages has been in existence almost as long as written language.