Shape Up with Sea Shapes! A 2D Shape Brain Break Adventure

Math Grades 1st Grade 3:15 Video
Print Lesson Plan Watch Video

Lesson Description

Get ready to move and groove while learning about 2D shapes with this fun, under-the-sea themed math lesson! We'll identify shapes, count, and use different ways to show numbers.

Video Resource

Name The 2D Shape: Under the Sea Math Brain Break

Move and Groove Math

Duration: 3:15
Watch on YouTube

Key Concepts

  • Identifying 2D shapes (circle, square, triangle, rectangle)
  • Counting and number representation (tally marks, ten frames, dots, dice)
  • Geometric attributes of shapes

Learning Objectives

  • Students will be able to identify circles, squares, triangles, and rectangles.
  • Students will be able to represent numbers using tally marks, ten frames, dots, and dice.
  • Students will actively participate in a math-based brain break.

Educator Instructions

  • Introduction (5 mins)
    Begin by asking students what they already know about shapes. Ask them to name some shapes they see in the classroom. Introduce the concept of 2D shapes (flat shapes).
  • Video Time! (5 mins)
    Play the "Name The 2D Shape: Under the Sea Math Brain Break" video. Encourage students to actively participate by moving and naming the shapes along with the video.
  • Shape Review (10 mins)
    After the video, review the shapes that were presented: circle, square, triangle, and rectangle. Discuss the defining attributes of each shape (e.g., a triangle has three sides and three corners).
  • Counting Practice (10 mins)
    Practice counting using tally marks, ten frames, dots, and dice. Draw examples on the board and have students count along. You can create your own under-the-sea themed counting activities (e.g., count the number of starfish, draw tally marks for the number of seashells).
  • Activity - Shape Scavenger Hunt (15 mins)
    Have students search the classroom (or at home if remote) for objects that resemble the 2D shapes learned. Have them draw or write down the objects they find for each shape.
  • Wrap Up (5 mins)
    Summarize the lesson by reviewing the shapes and counting methods covered. Answer any remaining questions.

Interactive Exercises

  • Shape Drawing
    Have students draw their own underwater scene using only the 2D shapes they learned. They can then label the shapes they used.
  • Ten Frame Fun
    Provide students with blank ten frames and counters. Call out numbers and have them fill in the ten frames to represent the numbers.

Discussion Questions

  • What is your favorite 2D shape and why?
  • Where do you see shapes in your everyday life?
  • Can you think of a different way to show the number 5 other than the ways in the video?

Skills Developed

  • Shape recognition
  • Counting and number representation
  • Active listening and participation
  • Gross motor skills

Multiple Choice Questions

Question 1:

Which shape has 3 sides?

Correct Answer: Triangle

Question 2:

Which shape has 4 equal sides?

Correct Answer: Square

Question 3:

Which shape is round like a ball?

Correct Answer: Circle

Question 4:

If you see IIII tally marks, how many is that?

Correct Answer: 5

Question 5:

If you see a ten frame that is all filled in, how many dots are there?

Correct Answer: 10

Question 6:

Which shape is like a door?

Correct Answer: Rectangle

Question 7:

A shape has four sides, but only two sides are the same length. What shape is it?

Correct Answer: Rectangle

Question 8:

How many corners does a square have?

Correct Answer: 4

Question 9:

Which of the following can you use to show a number?

Correct Answer: All of the above

Question 10:

Which shape does NOT have any straight lines?

Correct Answer: Circle

Fill in the Blank Questions

Question 1:

A __________ has no sides and goes around and around.

Correct Answer: circle

Question 2:

A __________ is like a window and has four sides.

Correct Answer: square

Question 3:

A __________ is like a party hat and has three sides.

Correct Answer: triangle

Question 4:

We can use __________ marks to count things.

Correct Answer: tally

Question 5:

A __________ frame helps us count to ten.

Correct Answer: ten

Question 6:

A rectangle has four sides and four __________.

Correct Answer: corners

Question 7:

When all 10 spaces are filled in a ten frame, we have __________.

Correct Answer: ten

Question 8:

A square has __________ equal sides.

Correct Answer: four

Question 9:

We can roll a __________ to get a number.

Correct Answer: dice

Question 10:

A square, a rectangle, a triangle, and a circle are all kinds of __________.

Correct Answer: shapes

Educational Standards

CCSS.Math.Content.1.G.A.1:Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size); build and draw shapes to possess defining attributes. CCSS.Math.Content.1.OA.C.6:Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

Teaching Materials

Download ready-to-use materials for this lesson:

Student Worksheet Classroom Slides Assessment Quiz Export to Google Docs
Add to Google Classroom

User Actions

Sign in to save this lesson plan to your favorites.

Sign In

Share This Lesson

Related Lesson Plans