Jump to navigation
Member Benefits
How to Join
En Espanol
Menu
Member Benefits
How to Join
En Espanol
About Us
Expand menu
Mission
AFT Leadership
Resolutions
State of the Union
AFT Constitution
Financial Statements
History
Contact
Our Members
Expand menu
Early childhood educators
PreK-12 teachers
Paraprofessionals & school-related personnel
Higher education
FAQ on Students for Fair Admissions v. Harvard and Students for Fair Admissions v. UNC
Nurses and health professionals
Public employees
Retirees
Our Community
Expand menu
Real Solutions for Kids and Communities
Literacy
Community Schools
Experiential Learning
Safety, Mental Health and Well-being
Investments and Resources
Toolkit
Celebrating Women's History Month at the AFT
Standing in Solidarity with Our AAPI Community
Powerful Partnerships Institute
What Kids and Communities Need
Campaign Events
Code Red
Disasters & emergencies
Emergency preparedness
Earthquakes
Hurricane preparedness & relief
Gun violence prevention
Immigration
Background & resources
Standing united to protect immigrant rights
Standing United toolkit
DACA (Deferred Action for Childhood Arrivals)
Immigration ICE raids
Member voices
Our partners on immigration
Unaccompanied refugee children
Public Service Loan Forgiveness
Reading Opens The World
Safe and welcoming public schools for all
Health Hub
Meet Your Health Issues Team
Webinars
Monkeypox and Polio
Health & Safety Committees
Asbestos & Chemical Exposures
Take Our Health and Safety Survey
Heat Hazards
Emergency Preparedness and Response
Nurses and Healthcare Professionals
COVID-19 Resources
Injury & Illness Reporting Requirements
Mental Health
OSHA Factsheets and Quick Cards
Voice Injuries
Food Service Hazards
OSHA Outreach Training
Occupational Stress
Ergonomics
Workplace Violence
Health Hub: Safe Laboratories
Bloodborne Pathogens
Workplace Bullying
Green Cleaning
Health Hub: Indoor Environmental Quality and Mold
Gun Violence
Take Action
Expand menu
AFT Votes
The American Rescue Plan
American Rescue Plan Accomplishments
National & local actions
Subscribe to AFT e-newsletters
Press Center
Expand menu
Press Releases
New York Times columns
Blog
Speeches
What Kids, Teachers and Communities Need
News
Expand menu
Latest News
Publications
American Educator
Issues Index
Author Index
Subject Index
Article Submission
Change of Address
Copyright Permission
Peer Review Board Application
Peer Review Board
AFT Health Care
Issues Index
Author Index
Subject Index
Article Submission
Change of Address
Copyright Permission
Peer Review Board Application
AFT resources for organizing and back to school programs
AFT Voices
Randi's Corner
Browse AFT Videos
Union Talk Podcast
Search
Search
search
Breadcrumb
Home
News
Publications
American Educator
Fall 1999
Knowing and Teaching Elementary Mathematics
Share on Facebook
Share on Twitter
Share with Email
By Richard Askey
Download the Article (72.09 KB)
American Educator,
Fall 1999
Member Benefits
How to Join
En Espanol