Lesson Plan:

Water Soluble Science

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October 11, 2015
by Dwayne Slobodnick

Learning Objectives

Students will be able to investigate and identify some solids that dissolve in water.


Introduction (5 minutes)

  • Explain to the students that they will be mixing some solids with water today.
  • Write the word "dissolve" on the board, and ask them if they know what it means.
  • Explain the meaning of dissolve, a solid being incorporated into a liquid, to the students.
  • Ask the students if they know of anything that dissolves in water.

Explicit Instruction/Teacher Modeling (5 minutes)

  • Ask the students to come together so that they can watch your demonstration.
  • Show the students a cup of water and tell them you are going to put some pepper in it.
  • Make a prediction if the pepper will dissolve or not and draw it on chart paper in a fashion similar to how the observation worksheet is set up.
  • Put in the pepper and stir.
  • Record your observations on the chart paper.

Guided Practice/Interactive Modeling (10 minutes)

  • Repeat your test with with a different solid of your choice.
  • Ask students to make a prediction and draw it on the chart paper.
  • Have a student put the solid in the water and stir.
  • As a class, discuss the result and record it on the chart paper.
  • Tell the students that they will now get to do this experiment with 4 different solids in small groups.

Independent Working Time (15 minutes)

  • Put the students in small groups and ask them to make and draw their predictions first before mixing.
  • Remind the students to take turns putting in the solids and to not taste the solids.
  • Hand out the To Dissolve or Not Dissolve worksheet and containers of solids to each group. Cups with water can be filled before class and set aside for the experiment.
  • Tell the students to begin the experiment.
  • Walk around the classroom to assist and have conversation with the students about their discoveries.
  • Have the students make sure their solids are back in their containers at the end of the experiment.



  • Enrichment: To challenge students, give them additional solids such as powdered milk, flour, rice, and coffee beans.
  • Support: Get the students to test a smaller number of solids.


Assessment (5 minutes)

  • Listen to the student conversations and check their results of the experiment.

Review and Closing (10 minutes)

  • Bring the students back together and go over the results they got.
  • Ask them if there were any surprises.
  • Ask them if they have any unanswered questions and write them down for use in a future experiment.

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