Objective

By the end of this lesson, you will be able to apply arithmetic skills to solve problems related to the sea.

Materials and Prep

• Pencil and paper
• Calculator (optional)
• Knowledge of basic arithmetic operations (addition, subtraction, multiplication, division)

Activities

1. Activity 1: Counting Sea Creatures

   Go to the beach or find pictures of sea creatures. Count the number of different types of sea creatures you can find or see in the pictures. Make a list of the counts for each type of sea creature.

2. Activity 2: Sea Creature Word Problems

   Create word problems related to sea creatures that involve addition, subtraction, multiplication, or division. For example, "If each dolphin eats 5 fish per day, and there are 3 dolphins in a pod, how many fish do they eat in a week?" Solve the word problems using arithmetic operations.

3. Activity 3: Sea Depth Calculation

   Research the average depth of the sea and choose a sea depth measurement. Convert the sea depth to different units of measurement such as meters, feet, or fathoms. Use arithmetic operations to perform the conversions.

Seventh Grade Talking Points

• "Arithmetic is a fundamental branch of mathematics that deals with numbers and basic operations."
• "In Activity 1, counting sea creatures helps us practice our counting skills and gather data."
• "Word problems in Activity 2 allow us to apply arithmetic operations to solve real-life situations related to sea creatures."
• "Activity 3 introduces us to the concept of unit conversions, which is essential in various fields including marine science."
• "By practicing arithmetic in the context of the sea, we can see how math is relevant and applicable to different aspects of our lives."