Curated OER
Multi-dimensional Modeling of Ore Bodies Making Sense of Empirical Data
Math scholars identify four different rock types in that strata and use this identification and data to construct a two dimensional geologic cross-section. They use data tables to construct a three-dimensional geologic cross-section.
Illustrative Mathematics
Use Cavalieri’s Principle to Compare Aquarium Volumes
Learners are designing a stunning new water feature for an aquarium, but they soon discover that more than just a pretty home for their fishy friends is required. From calculating the volume of a composite shape through the abstract...
Curated OER
Tree Cookies!
"Tree Cookies!" is a delicious little presentation designed to introduce upper elementary or middle school botanists to the anatomy of a tree trunk. The cambium, phloem, xylem, and other vital structures are identified and defined. Two...
Curated OER
Cross Sections
Young visual learners explore different cross sections of 3-dimensional objects. First, cross sections of cubes are explored by using an interactive flash activity. This is then extended by looking at cross sections of spheres,...
Curated OER
Tree Friends
Students identify their special tree using all senses other than sight. They identify six different internal parts within a cross section of tree trunk
(bark, phloem, xylem, cambium, heartwood, and roots). Students compare and contrast...
Curated OER
3D Computer Imaging Class: Cross-Section Lesson
Students use 3-dimensional materials to create a simple 3-D object. They think about different ways the object could be sliced. Students choose one way to slice the object, and draw the sliced shape on paper or computer. Using a 3-D...
Curated OER
Surface Area of Prism
Tenth graders are provided instructions, including a video, on calculating the surface area of a prism. The one-page interactive worksheet contains two worked questions. Answers are included.
Curated OER
Challenge Sheet 7: Area and Cross-Sections
In this area worksheet, students set up integrals which evaluate the area of a region bounded by graphs. they use vertical and horizontal cross-sections. This two-page worksheet contains seven multi-step problems.
Curated OER
Tree Friends
Students are introduced to tree structure and use. They identify their special tree using all senses except sight. Students identify six different internal parts within a cross section of tree trunk (bark, phloem, xylem, cambium,...
Texas Education Agency
Texas Gateway: Describing and Drawing Cross Sections
Given a verbal and/or pictorial description of the intersection of a plane with various three-dimensional geometric figures, the student will describe and/or draw the intersection.
OER Commons
Oer Commons: Exploring Cross Sections
Students will explore the cross-sections that result when a plane cuts through a rectangular prism or pyramid. Students will also see examples of cross-section cuts in real-world situations.
Texas Instruments
Texas Instruments: Conics as a Locus of Points
Students investigate the definition of a parabola through one of its geometric definitions. They study conic sections. They examine an ellipse as a locus of points such that the sum of distances from the foci to the traced path is constant.
Environmental Chemistry
Periodic Table of Elements: Gallium
A very detailed look at the element Gallium, a member of the Boron Group.
Environmental Chemistry
Periodic Table of Elements: Indium
A very detailed look at the element Indium, a member of the Boron Group.
WebMD
Medicine Net: Computerized Axial Tomography
This site from MedicineNet.com gives a CAT Scan description, why they're performed, risks, and patient preparation. A thoughrough explanation of the process is provided.
CK-12 Foundation
Ck 12: Cross Sections and Nets: Cereal Box Grid
[Free Registration/Login Required] Students will explore cross sections and nets of three dimensional objects. Click challenge me to answer practice questions and click learn more to watch a video.
Khan Academy
Khan Academy: Cross Sections of 3 D Objects
Practice your knowledge of all possible cross-sections of common 3D objects. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Illustrative Mathematics
Illustrative Mathematics: G Gmd, G Mg Tennis Balls in a Can
In this task, students investigate the volume of tennis balls and their cylindrical container, the empty space around the balls, different ways of slicing them, and what their visualizations will look like. Aligns with G-GMD.B.4 and...
Khan Academy
Khan Academy: Cross Sections of 3 D Objects (Basic)
Basic practice problems involving cross sections of 3D objects.
CK-12 Foundation
Ck 12: Geometry: Cross Sections and Nets
[Free Registration/Login may be required to access all resource tools.] In this lesson students draw two-dimensional representations of solid figures. Students examine guided notes, review guided practice, watch instructional videos and...
Shodor Education Foundation
Shodor Interactivate: Cross Section Flyer
Explore cross sections of different geometric solids: cone, double cone, cylinder, pyramid, and prism. Manipulate the cross section with slider bars, and see how the graphical representation changes.
Shodor Education Foundation
Shodor Interactivate: Cross Sections
This instructional activity utilizes the concepts of cross-sections of three-dimensional figures to demonstrate the derivation of two-dimensional shapes.
Shodor Education Foundation
Shodor Interactivate: Conic Flyer Equations
Introduces students to a geometric derivation of the conic sections.
Khan Academy
Khan Academy: Cross Sections of 3 D Objects
Practice your knowledge of all possible cross-sections of common 3D objects.