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Lake Washington School District
Laura Ingalls Wilder Elementary
22130 N.E. 133rd St., Woodinville, WA 98077 | 425 936-2740
Laura Ingalls Wilder Elementary > PTSA > Enrichment Activities > Watershed > Grade Four Lessons
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Grade Four Lessons
Detailed lessons for Grade Four.
 

Fall - Soil pH Testing

Students learn how to conduct pH tests on the soil at the watershed sites and determine what type of plant life the soil will support.  Students learn the importance of following good scientific methods that will be applied in future watershed testing.

 

Spring - Water pH Testing

Students conduct pH testing on the stream water at each of the watershed sites.  They learn the importance of pH levels as it relates to the health of the stream and salmon life.