Curated OER
Counting Chart
Elementary learners discover counting through a counting chart. In this math lesson, students identify numbers 1-100. They then point or recite their counting numbers.
Curated OER
Exploring the Circumcenter of a Triangle
Students construct the circumcenter of a triangle. In this constructing the circumcenter of a triangle lesson plan, students construct a triangle using Cabri Jr. Students draw perpendicular bisectors of the sides of the triangle....
Curated OER
Opposite Angles in a Cyclic Quadrilateral
Learners investigate cyclic quadrilaterals in this geometry activity. They use Cabri Jr to explore the sum of the measures of opposite angles in a cyclic quadrilateral. The dynamic nature of Cabri allows learners to form and verify...
Curated OER
30-60-90 Right Triangles in Cabri Jr.
Young mathematicians draw and label right triangles using Cabri Jr. technology. They create other special right triangles and identify the length of the hypotenuse and each leg. High schoolers explore the ratios to determine how the...
Curated OER
Midsegments of a Triangle
Students analyze midsegments of triangles in this lesson. They use Cabri Jr. software to observe the relationships between interior angles and midsegments of triangles. Specific instructions for creating this lesson in Cabri Jr. are...
Curated OER
Properties of Parabolas
Learn to identify the properties of parabolas. High schoolers define parabola as the locus of all points equidistant from a fixed point and a fixed line. Also, interpret the equation for a parabola in vertex form and gain a visual...
Curated OER
Exponential Reflections
Explore the natural log function through the investigation of inverse of the exponential functions by plotting the inverse of the exponential solution points. Students examine the results to determine that the inverse is the...
Curated OER
Cramer's Rule ID: 8793
Mathematicians are introduced to Cramer’s Rule and use it to solve three systems that have one solution, no solutions, and an infinite number of solutions. Students use TI-Nspire to graph the systems to verify their answers and...
Curated OER
Asymptotes and Zeros
Learn how to explore rational functions and investigate the graphs rational functions and identify its singularities and asymptotes. Learners approximate the solutions to rational equations and inequalities by graphing.
Curated OER
Zeros of Polynomials
Students graph polynomials. For this Algebra II lesson, students investigate the graph of a polynomial to determine the value and the number of zeros. This lesson requires the use of a graphing calculator.
Curated OER
Getting Triggy With It
The concept of sine and cosine is explored in this instructional activity where students graph sine and cosine graphs using a transformation application on the graphing calculator. Students change the coefficients for the...
Curated OER
Reference Angles
Learn how to measure the reference angles in degrees and radians. Students find reference angles that are coterminal with a given angle.
Curated OER
Complex Roots: A Graphical Solution
Using their Ti-Nspire to determine the solutions of parabolas, students explore the concept of complex roots. Students determine if parabolas have real or complex roots. Students determine the the axis of symmetry and the...
Curated OER
Discriminating Against the Zero
Students explore the concept of quadratic equations. In this quadratic equations instructional activity, students find the roots or zeros of quadratic equations using the quadratic formula. Students give examples of functions...
Curated OER
Exploring Complex Roots
In exploring the concept of complex roots, students find the axis of symmetry and roots of parabolas. Then, they discuss what makes a solution complex and how to identify functions with complex roots.
Curated OER
Exploring Quadratic Equations
By stretching and translating the parabola given and determining the effects on the equation, students explore finding the vertex and zeros of a parabola and relate them to the equation. Students also view the intercept form to determine...
Curated OER
TI-Nspire Activity: What Does Your Representation Tell You?
By learning to select the best representation for three meal plans, students compare three meal plans to determine the best choice. Data for the meal plans is sorted on a table, as an algebraic equation, and graphed on a coordinate grid....
Curated OER
Equadorian Rainforest: The Tropical Supermarket
Students study the concept of sustainable agricultural practices through cocoa farming and the lives of the people who are the producers. Students watch a slide show and read a story which helps them understand the origins of chocolate,...
Curated OER
Visualizing School Equity
Learners examine how school segregation is affected by funding gaps. In this equity lesson,students read the article, "Crossing the Gap." Learners analyze funding gaps between schools. Students understand that every learners is...
Curated OER
Past School Practices
Students research the history of a school system. In this school system lesson, students list the grade levels and subjects taught in their school and interview their teachers and administrators. Students collect past photographs of...
Curated OER
A Simulated Journey
Fifth graders experience simulations in order to meet the required Social Studies standards. In this simulation lesson, 5th graders experience a teacher set-up simulation of students being put in the Responsible Thinking Classroom for no...
Curated OER
The Motivation for Movement
Students explore the geographic theme of movement. In this migration lesson, students discuss push-pull factors that motivate immigrants and interpret illegal immigration data. Students also discuss the difficulties that illegals face.
Curated OER
Family Ties
Young scholars explore what life is like for immigrant women in the United States. In this immigration lesson, students study about immigration through reading and watching a video, then share their thoughts and ideas by...
Curated OER
Rain Forests
Students investigate claims of medicinal plants found in the rain forest. In this research skills lesson, students examine the validity of Internet sources as they visit websites in search of information about rain forest plants that are...