In this field lab activity, students will determine the density, pH and water content of prairie soil, transition soil, woods soil, and riverbed soil and compare their findings.

This lab activity is a paper fossil dig where students discover skeletal characteristics of humans, primates and hominids and are asked to make a short oral presentation to the class.

In this unit, students make regular journal entries about a plant/animal/insect community in the natural area around our school and use this to create a Non-fiction Class Book. They also interview family/resources to discover, record and present stories about human relationships with nature from their culture(s).

This is an investigation where students observe what happens to land after it is mined. Students will create a hypothesis, observe their model, conclude what happens to land after it is mined, and discover the role humans play in land conservation.

A process for technical problem solving is introduced and applied to a fun demonstration. Given the success with the demo, the iterative nature of the process can be illustrated.

Students test the question, "Do eggs balance on the equinox?" Students develop their own procedure, analyze their data and come up with their own conclusions.

This is a series of lab activities where students complete experiments for open, closed, series and parallel circuits.

This activity is a simple way for students to understand the basics of electron energy levels, a fundamental atomic concept.

ELL students create and share a botanic field guide incorporating depiction, measurement, description, and classification of common Minnesota trees, shrubs, wildflowers, and plants.

This activity is a class lab activity in which students will observe unknown rocks and learn about how they fit into the rock cycle.

In this introductory physics lab activity, students explore the sounds made by the free-end of a ruler vibrating off the end of a desk.

This activity provides for small group investigation of the properties of different liquids leading to the discovery that liquids are different in many ways, including density.Students would be led to a very beginning understanding of density.

This activity is an extension of the FOSS Variables Lifeboat investigation. Students choose a lifeboats variable to investigate, write up an experiment based on the variable to be tested, test the variable, and create a lifeboats investigation poster to share their results.

In this unit students begin to explore the concepts of fairness and justice. Over the course of the unit students are exposed to numerous ordinary people who worked together to overcome injustice and fight for a better future for others. Students will grapple with what it means if something is fair and just, particularly in regard to race, class, gender, and ability. Then students will be challenged to think about the different ways in which people showed courage, patience, and perseverance in order to challenge things that were fundamentally unfair. Over the course of the unit it is our hope that students are able to acknowledge and realize that things aren't always fair in the world around them, but that doesn't mean that it always has to be that way. It is our hope that students see that identifying the problem is only the first step and that anyone who has the right mindset and beliefs can inspire others to work together to create a more just future for everyone. Essentially, we hope that this unit begins to plant the seed within our students that they can be activists and take charge of their own lives and communities. No one is too young to inspire change. It is important to note that this unit primarily focuses on big-scale changes. Additional projects and lessons should be added to help students understand how what they learned connects to change on a smaller scale.

In reading, students will continue to work on developing their informational reading strategies, particularly when reading a collection of narrative nonfiction texts. The focus of this unit is on reinforcing and practicing targeted informational strategies in the context of a narrative structure. In particular, students will be pushed to describe the connection between individuals, events, and pieces of information. Students will also be challenged to think about the reasons an author gives to support a point and how those reasons look slightly different in a narrative informational text than in a scientific or history-based informational text.

In writing, students will continue to work on writing responses to the text that provide relevant and accurate information along with some evidence of inferential or critical thinking.

This guided inquiry activity is designed to help students understand that people get all of their knowledge from their senses, and that is why our senses are so important.

Through a series of three lessons, each with its own hands-on activity, students are introduced to 1) forces, loads and stress, 2) tensile loads and failure, and 3) torsion on structures—fundamental physics concepts that are critical to understanding the built world. The associated activities engage students through experimenting with hot glue gun sticks to experience tension, compression and torsion; the design of plastic chair webbing strips; and problem-solving to reinforce foam insulation "antenna towers" to withstand specified bending and twisting.

A structured geometry program teacher edition of daily lesson plans and teacher supports to accompany the College Access Reader: Geometry student edition.

The Teacher's Edition covers tips, common errors, enrichment, differentiated instruction and problem solving for teaching CK-12's Basic Geometry Student Edition. The solution and assessment guides are available upon request.

CK-12 Geometry Teacher's Edition covers tips, common errors, enrichment, differentiated instruction and problem solving for teaching CK-12 Geometry Student Edition. The solution and assessment guides are available upon request.

In Unit 5, students explore concepts of perimeter and geometry. Students have gradually built their understanding of geometric concepts since Kindergarten, when students learn to name shapes regardless of size and orientation. They also learn to distinguish between flat and solid shapes. In Grade 1, students’ understanding grows more nuanced, as they learn to distinguish between defining and non-defining attributes, as well as compose and decompose both flat and solid shapes. In Grade 2, students draw and identify shapes with specific attributes. All of this understanding gets them ready for Grade 3, in which students begin their journey of measuring those attributes, including area (addressed in Unit 4), and perimeter (explored here), as well as classification of shapes based on attributes into one or more categories.

Students begin the unit by defining perimeter as the boundary of a two-dimensional shape and measure it by finding its length. For a polygon, the length of the perimeter is the sum of the lengths of the sides. They develop their understanding of perimeter by measuring it with a ruler, finding it when all side lengths are labeled, and then finding it when some information about the length of a shape’s side lengths needs to be deduced, such as when a rectangle only has its length and width labeled. Students then solve real-world and mathematical problems, both given a figure and without one, involving perimeters of polygons (3.MD.8). With this understanding of perimeter, they are able to compare the measurement of area and perimeter of a rectangle, seeing that a rectangle with a certain area can have a variety of perimeters and, conversely, a rectangle with a certain perimeter can have a variety of areas, connecting the additional cluster content of perimeter to the major cluster content of area. Students then solve various problems involving area and perimeter. The last topic of the unit explores geometry. Students build on Grade 2 ideas about polygons and their properties, specifically developing and expanding their knowledge of quadrilaterals. They explore the attributes of quadrilaterals and classify examples into various categories (3.G.1), then explore attributes of polygons and classify examples into various categories, now including quadrilaterals. Students also draw polygons based on their attributes. Students next use tetrominoes and tangrams to compose and decompose shapes.

In this unit, students reason abstractly and quantitatively, translating back and forth between figures and equations in the context of perimeter problems (MP.2). Students will also construct viable arguments and critique the reasoning of others as they develop a nuanced understanding of the difference between area and perimeter, as well as when they classify shapes according to their attributes and justify their rationale (MP.3). Lastly, students will use appropriate tools strategically by using rulers to measure the side lengths of polygons to find their perimeter, as well as use rulers and right angle templates to find attributes of shapes to determine their classification (MP.5).