Grade 1 Math Adventure: The Amazing Number 1

Materials Needed

• 10–20 small objects, such as buttons, blocks, toy animals, or coins
• Paper and pencil or crayons
• Number cards labeled 0–10, homemade or printed
• One small container, cup, or bowl
• Optional: dice, sticky notes, and a digital drawing or whiteboard app

Learning Objectives

By the end of the lesson, the learner will be able to:

• Recognize and name the numeral 1.
• Show that the number 1 represents one object.
• Write the numeral 1 correctly.
• Find examples of one object in everyday life.
• Explain that one is a quantity and that it comes after zero.

Success Criteria

I can:

• Point to the number 1 when I see it.
• Give exactly one object when asked.
• Write a recognizable numeral 1.
• Tell or show an example of “one” in the real world.

Introduction: The Mystery of One

Hook: Hold up one favorite toy or object and ask:

“How many objects am I holding? What would happen if I added one more?”

Invite the learner to look around the room and find something that appears alone, such as one lamp, one clock, or one door.

Explain:

“Today we are going on a number adventure. We will learn about the number 1, how to show it, how to write it, and where we see it in everyday life.”

Body: Learn and Practice

1. I Do: Meet the Number 1

Show a number card with the numeral 1. Say:

“This is the numeral 1. We say it as ‘one.’ One means a single object.”

Place one object in front of the learner. Touch it once and count:

“One.”

Show several objects, but leave exactly one in a separate group. Point out:

“This group has one object. This group has more than one object.”

Demonstrate how to write 1:

1. Start near the top of the writing space.
2. Make a short diagonal line down.
3. Continue with a straight line down.
4. Optionally add a small base line, depending on the learner’s writing style.

Quick check: Show the number cards 1, 3, and 5. Ask, “Which card shows one?”

2. We Do: One or More?

Place different groups of objects on the table, one group at a time. Include groups with zero, one, and several objects.

For each group, ask the learner:

• “How many objects do you see?”
• “Does this group show one?”
• “How could we change it so it shows one?”

Work together to place the number card 1 beside the group containing one object.

Think-pair-share adaptation: If learning with a partner, have the learner think silently, tell a partner, and then share the answer. In a homeschool setting, the adult can act as the partner.

3. We Do: The “Give Me One” Game

Place several objects in the container. Give these instructions:

“When I say ‘Give me one,’ take exactly one object from the container and place it on the table.”

Repeat several times with different objects. Each time, have the learner touch and count the object once.

Then reverse roles. The learner says, “Give me one,” and the adult gives one object. The learner checks whether the adult followed the direction.

Formative assessment: Notice whether the learner consistently selects exactly one object without taking extras.

4. You Do: Number 1 Scavenger Hunt

Invite the learner to search the room or home for examples of one. Possible examples include:

• One refrigerator
• One pet in a particular room
• One pencil on a desk
• One sun in a drawing or picture
• One hand held up

The learner may choose one of these options:

• Draw three examples of one.
• Take photographs of three examples, with adult permission.
• Build three examples using blocks or toys.
• Tell the adult three examples aloud.

5. You Do: Write and Decorate the Number 1

Have the learner practice writing the numeral 1 several times. Encourage careful formation rather than speed.

Next, ask the learner to decorate one large numeral 1 with:

• One sticker
• One star
• One drawn object
• One favorite color

Ask:

“Why did you use only one decoration? How does your picture show the meaning of 1?”

Real-World Connection

Explain that people use the number 1 every day. Discuss examples such as:

• Ordering one snack
• Reading “one” on a page or sign
• Using one key to open a door
• Taking one turn in a game
• Following a direction to pick up one item

Ask the learner to create one sentence using the word one, such as “I have one blue block.”

Assessment

Formative Assessment During the Lesson

• Ask the learner to identify the numeral 1 among other numbers.
• Ask the learner to select exactly one object.
• Watch whether the learner counts one object only once.
• Ask the learner to explain what one means.

Summative Demonstration

Give the learner this four-part challenge:

1. Point to the numeral 1.
2. Place exactly one object beside it.
3. Write the numeral 1.
4. Tell or draw one example of one from everyday life.

Mastery benchmark: The learner completes at least three of the four tasks independently and can explain that 1 means one object.

Differentiation and Support

For Learners Needing More Support

• Use large, brightly colored objects and a large number card.
• Limit choices to two cards, such as 1 and 2.
• Use hand-over-hand guidance or dotted-line tracing for writing.
• Repeat the phrase, “One means one object,” throughout the lesson.
• Let the learner respond by pointing, touching, building, or speaking.

For Learners Ready for an Extension

• Compare zero, one, and two objects.
• Find the number 1 in a book, calendar, address, or classroom label.
• Write the word one.
• Create a short story involving one character or one object.
• Roll a die and explain whether the result is one or more than one.

Conclusion: Tell What We Learned

Review the lesson by asking:

• “What number did we learn today?”
• “What does 1 mean?”
• “Can you show me one object?”
• “How do we write 1?”
• “Where can we find one in our home or community?”

Finish with this chant while holding up one finger:

One means one, that much is true!
One object here, one object too!
Write a 1 and say it proud:
“I know one!” say it loud!

Optional Follow-Up Activity

During the day, invite the learner to keep a “One Journal.” Each time the learner finds one object, they may draw it, write the word one, or place a check mark on a tracking sheet. Review the examples together at the end of the day.