Skip to main content

iTDi TESOL online

Menu

2026 Courses
Self-Study
About Us
EFL Resources
Publishing
Contact

Login

All posts by Cecilia Lemos Harmer

Cecilia Lemos Harmer profile

14

May'26

OOPS sign symbolizing the various types of errors that students make

What Is an Error in Language Learning? Mistakes, Slips, and Attempts Explained

Teaching Methodology

Cecilia Lemos Harmer

Originally published 2012 by Cecilia Lemos Harmer on iTDi.pro. Updated May 2026. What Linguists Mean by “Error” — And Why …

Read More

RECENT POSTS

The “Publishing” Side of Self-Publishing: What ELT Authors Need to Know June 3, 2026
Out-of-Class Work: Taking English Learning Out into the Street May 30, 2026
Why Classroom Size and Shape Belong in Your Lesson Plan May 30, 2026
SLOW Moments: How to Exploit Spontaneous Learning Opportunities in Class May 30, 2026
From Detailed Plans to Index Cards: The Evolution of Lesson Planning May 30, 2026

CATEGORIES

Assessment & Feedback (6)
Classroom Management (4)
Lesson Planning & Materials (6)
Professional Development (6)
Teaching Methodology (8)
Teaching Young Learners (5)

FAQ
Blog
All courses
Privacy
Terms & Conditions

International Teacher Development Institute (ITDI LLC)

Content © iTDi TESOL. All rights reserved.

Facebook-f Instagram Linkedin Youtube

top

Content © iTDi TESOL. All rights reserved.