Sink or Float Predict and Test

Kindergarten ScienceSink or Float3 pages

About this worksheet

Eight everyday objects go through a guess-and-test chart on this 3-page kindergarten science sheet. For each one, students circle sink or float as a prediction, then test it in water and circle what happened. The list is a rock, cork, key, leaf, marble, rubber duck, metal spoon and dry sponge. Page 2 asks how many objects sank and how many floated, with cup pictures to circle. It ties to Common Core K.MD.3 and K.CC.5, and the answer key gives the result for all eight objects.

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Sink or Float Predict and Test: Sink or Float - page 1

Sink or Float Predict and Test: Sink or Float - page 2

Sink or Float Predict and Test: Sink or Float - page 3

Curriculum objectives covered

K.MD.3

“Classify objects into given categories; count the numbers of objects in each category and sort the categories by count.”

The chart puts each of the eight objects in the sink or float group, and page 2 counts each group.

K.CC.5

“Count to answer "how many?" questions about as many as 20 things arranged in a line, a rectangular array, or a circle, or as many as 10 things in a scattered configuration; given a number from 1-20, count out that many objects.”

Page 2 asks how many sank and how many floated, and students match each count to a picture of cups.

What's inside this worksheet

Sink or Float Chart

A table with eight rows. Each row has a small picture, the object name and two pairs of sink and float icons. Students circle one icon for their guess and one for what happened.

Count and Answer

Two questions, how many objects sank and how many floated. Each has three cup pictures to choose from, labeled 3, 4 and 5 for the first and 2, 4 and 6 for the second.

Answers

The result for every object (four sink, four float), a note that guesses will vary, and both counts, which are 4.

How teachers use it

Test with a tub

Fill a clear tub and test the objects one at a time as a class. Students write their guess before each splash, so they see when they were right. Test the dry sponge last, since it sinks once it soaks up water.

Partner guesses

Pairs agree on a guess, then each circles their own icon. A pair that disagrees has a reason to watch the test closely.

Tally first

Tally sank and floated on the board before students open page 2. The totals are four and four, so the two answers are easy to check against the class count.

More Kindergarten Science worksheets

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