Lesson 2.1: Measured Water Activity

2nd Grade Matter Unit Blueprint—Lesson 2.1: Measured Water Activity

Additional activity, see “Helpful Tips” for details
Pacing Suggestions:

Day 1 - Do Part 1 of activity
Day 2 - Do Part 2 of activity

Teacher Resources:

Tips

Essential & Unit Questions ¹

Benchmarks ²

Formative and Summative Assessments ³

Using Assessments to Monitor Student Learning

How does the amount of water change if it is frozen and then melted?

4B(K-2)#2: Water can be a liquid or a solid and can be made to go back and forth from one form to the other. If water is turned into ice and then the ice is allowed to melt, the amount of water is the same as it was before freezing.

12B(K-2)#1: Use whole numbers and simple, everyday fractions in ordering, counting, identifying, measuring, and describing things and experiences.

12D(K-2)#2: Draw pictures that correctly portray at least some features of the thing being described.

Student predictions and class discussion about the teacher demonstration of measured water freezing and melting (using a graduated cylinder). Students complete My Observation Sheet (available on page 198 in Teacher’s Guide).

Click to view a sample of student work. (Acrobat PDF)

Criteria to consider during class discussion of teacher demonstration of measured water freezing and melting and when reviewing students’ My Observation sheets:

Do students know that the water will turn into ice?
Do students know that the amount of water is conserved (it won’t change after melting)?
Do students accurately measure the amount of water in the graduated cylinder?
Do students use the data as evidence to support the concept that the amount of water does not change from its original amount?
Do the students’ drawings accurately portray the graduated cylinder and the water levels?

For conceptual benchmarks.
Bolded Sections indicate portion of benchmark addressed.
Unless noted as a Summative Assessment, the assessments are formative and should be used to guide teaching and learning.