Mystery of the Moving Tides

Introduction

Have you ever noticed that the beach looks completely different in the morning versus the afternoon? 

Sometimes the shore is wide and dry, and other times the water creeps almost up to the rocks! 

For centuries, sailors, fishermen, and coastal communities have depended on understanding this mysterious rhythm of the ocean.

You've just been hired as a Junior Ocean Scientist for a coastal research team. 

Your mission: investigate why the ocean rises and falls every day, and create a report that could help local fisherfolk plan their work around the tides. Get ready to explore the moon, the sun, and the pull of gravity the real reasons behind the tides.

Task

By the end of this WebQuest, you and your team will create a short presentation or infographic that explains:

  1. What causes ocean tides
  2. The role of the moon and sun's gravity
  3. The difference between high tide and low tide
  4. Why tides happen twice a day in most places
  5. One real-world example of how tides affect a community (fishing, shipping, tide pools, etc.)

Your final product can be a poster, slideshow, or short video — you decide the format, as long as it clearly explains the science behind tides.

Process

Follow these steps to complete your mission:

  1. Form your team (2–3 students per group).
  2. Explore the resources listed below to gather information about tides.
  3. Take notes using this guiding question: "Why does the ocean level change throughout the day?"
  4. Discuss as a team — compare what each of you found and identify the main causes of tides.
  5. Create your final product (poster, slideshow, or video) that answers the task questions.
  6. Present your findings to the class.

Evaluation

Criteria

4(Excellent)

3(Good)

2(Needs 
Improvements)

1(Incomplete)
Explanation of Tides Clearly and 
accurately explains 
what causes tides		 Mostly accurate
explanation with 
minor gaps		 Explanation is 
unclear or has
errors		 Little to no 
explanation 
given
Use of Resources Uses multiple 
resources and 
cites them		 Uses at least 
one resource		 Little use of 
provided 
resources		 Resources 
not used
Creativity/Presentation Well-organized, 
visually engaging, 
creative		 Organized 
but plain		 Somewhat 
disorganized		 Poorly 
organized
Teamwork All members 
contributed equally		 Most members 
contributed		 Uneven 
participation		 One member 
did all the work

 

 

Conclusion

Congratulations, Junior Ocean Scientist! You've uncovered one of nature's oldest mysteries! the pull of the moon and sun shaping the rhythm of our oceans every single day. Understanding tides isn't just cool science trivia; it helps sailors navigate safely, fishermen know the best time to fish, and coastal communities plan their daily lives.

Take a moment to reflect: What surprised you most about how tides work? How might this knowledge be useful if you lived near the coast?

Credits

This WebQuest was created as part of an Educational Technology course assignment.

Content resources used:

Images and media:

  • Images sourced from free/public domain educational resources (NOAA, NASA)
  • YouTube videos used for reference are property of their respective creators/channels

WebQuest created by: Karina Pearl C. Awa-ao
Course: Technology for Teaching and Learning
Date: 10 Sept. 2026

Teacher Page

Topic: Mystery of the Moving Tides

Grade Level: Grade 8

Subject Area: Science (Earth and Space)

Learning Objective:
Students will be able to explain why ocean tides happen and predict when high and low tides occur, using the moon's and sun's gravitational pull.

Curriculum Connection:
This WebQuest supports learning standards related to Earth science, specifically the relationship between celestial bodies (moon, sun, Earth) and natural phenomena observed on Earth, such as tides.

Pedagogical Approach:
This activity uses an exploratory, inquiry-based learning approach combined with simulation-style resources. Rather than simply being told the answer, students investigate real scientific resources (NOAA, NASA, National Geographic) to build their own understanding of tides, which supports deeper, more meaningful learning compared to direct instruction alone.

Time Required:
Approximately 1–2 class sessions (45–60 minutes each), depending on group size and depth of final product.

Materials Needed:

  • Computer or tablet with internet access
  • Access to the listed web resources
  • Presentation tools (Google Slides, PowerPoint, poster materials, or video recording tools, depending on chosen format)

Grouping:
Students work in small teams of 2–3 to encourage collaboration and discussion.

Assessment:
Teachers may use the provided rubric (see Evaluation section) to assess understanding of tide causes, use of resources, creativity, and teamwork.

Tips for Implementation:

  • Consider a short whole-class discussion beforehand (e.g., "Why is the beach different in the morning vs. afternoon?") as an advance organizer to activate prior knowledge.
  • Encourage students to take notes while exploring resources before jumping into creating their final product.
  • If technology access is limited, printed excerpts of the NOAA or NASA articles can be used as an alternative to direct web browsing.