👩‍🏫 Teacher’s Guide

Objective
Students will apply prefix bi using the examples and practice below.

Vocabulary
bicycle, bilingual, biped

Teaching Notes

• Model one response, then ask students to work independently and explain their choices with specific words or evidence.
• Teach the rule, discuss the worked example, and cover answers during practice.
• Use incorrect responses to identify which part of the rule needs another example.
• Allow approximately 25–35 minutes, including discussion and independent practice.

🧒 Student Worksheet

Concept and Helping Material

Big Idea
A prefix is added to the beginning of a base. In these examples, bi contributes the meaning "two." Word parts are clues; always check the whole word in context.

Word study

• bicycle: a cycle with two wheels
• bilingual: using two languages
• biped: an animal that walks on two feet

Model
Read the first example. Identify the word part, explain the whole word, and test the meaning in a sentence.

Vocabulary and Definition

• — a cycle with two wheels
• — using two languages
• — an animal that walks on two feet

Words to Learn

bicycle, bilingual, biped

Sentences to Fill In

1. The term for a cycle with two wheels is ____.
2. The term for using two languages is ____.
3. The term for an animal that walks on two feet is ____.

Think & Respond Q&A

1. What does bicycle mean?
2. Which word means "a cycle with two wheels"?
3. What does bilingual mean?
4. Which word means "using two languages"?
5. What does biped mean?
6. Which word means "an animal that walks on two feet"?
7. Use one practice word in a sentence that shows its meaning.

Hands-On Experiment or Activities

Make matching word and meaning cards. Match each pair, then group words with the same word part. Explain how the part affects the meaning. Check any spelling change when the part is added.

Reflection

• Explain one thing you learned.
• Write a short paragraph applying the skill. Underline your evidence or target words and explain one choice.