The Effect of Acid Rain on Seed Growth part of MnSTEP Activity Mini-collection
This activity is an in class lab where students will compare different acid solutions on seed germination and growth.

Investigating Soil Composition - Soil Soaks Up Water part of MnSTEP Activity Mini-collection
This activity is a classroom quick lab where students explore sand, soil, and water in relation to absorption and permeability.

Duckweed Bioassay part of MnSTEP Activity Mini-collection
This activity is a bioassay lab where students tested the effect of an environmental toxin (fertilizer) on the growth rate of Duckweed.

Acid-Base Titration of an Eggshell part of MnSTEP Activity Mini-collection
This activity is acid-base titration lab where students determine the percent of calcium carbonate in an eggshell.

Investigating Acid Rain: The Affect of Acid on Seed Germination part of MnSTEP Activity Mini-collection
This activity is a self-created lab investigation where students gather data on acid and its affects on seed germination.

Investigating soil acidity: Comparing pH and buffering capacity of various soils part of MnSTEP Activity Mini-collection
In this activity students investigate soil pH differences and buffering capacity as it relates to acid rain, interpret and present their findings, and develop a new, experimental question.

Testing alkalinity in water systems (simulation) part of MnSTEP Activity Mini-collection
This investigation is a laboratory activity in which the alkalinity of 2 types of substrates (carbonate vs. non-carbonate) are compared on the basis of titration. Students will reflect on the relationship of alkalinity and toxic heavy metals.

Monitoring pollution in a freshwater environment part of MnSTEP Activity Mini-collection
This inquiry lab is useful for monitoring water pollution in a freshwater system using direct and/or indirect methods.

Macroinvertebrates and Indicators of Water Quality part of MnSTEP Activity Mini-collection
This activity is a field investigation where students can go to a body of water and collect the macroinvertebrates there and identify them. Based on what they find, they can assess the water quality by determining the biotic index.

Investigating Soil-Which soil help plants grow? part of MnSTEP Activity Mini-collection
This activity is a guided inquiry investigation where students gather data on which soil is the best for growing plants. Student will interpret their data, and develop a conclusion from the data. The student will determine which type of soil they would like to use in the next activity of making their own terrariums. The data collected could lead to further questions, which can be investigated in some extension activities.