- #Wifi explorer quadratic model plus
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In adults, the association between wrist-measured and hip-measured PA was better described by a quadratic than a linear model (Quadratic-R 2 = 0.54 vs. We also analyzed how the capacity to dissociate arm movements from locomotion influences total PA.
#Wifi explorer quadratic model plus
We analyzed the association between wrist-measured (arm movements plus locomotion) and hip-measured PA (locomotion). Subjects wore, simultaneously, one accelerometer in the non-dominant wrist and another in the hip for ≥ 4 days. We included 209 adults (64% females, mean age 32.1 years) and 105 children (40% females, age 10.0 years). We hypothesized that high PA levels as locomotion associate with a compensatory attenuation in arm movements. Then, a compensatory reduction in the expenditure of non-essential activities constrains the TEE.
#Wifi explorer quadratic model download
View Overview | Download Activity Files (.The constrained total energy expenditure (TEE) model posits that progressive increases in physical activity (PA) lead to increases in TEE but after certain PA threshold, TEE plateaus. They make a conjecture about what type of rectangle has the most area for a given perimeter and check their conjecture by plotting the side length and area of the rectangle on the coordinate plane. Students explore areas of rectangles whose perimeter is fixed. They check their results by changing parameters and comparing the graphs. Students convert quadratic functions between standard, vertex, and factored forms. Quadratic Quandary: Finding the Vertex of a Parabola Students plot a quadratic function in factored form, investigate the relationship between the equation and its graph, and use their observations to create functions from various descriptions of their graphs. Students explore dynagraphs, an alternative to Cartesian graphs, to develop a feel for various types of functional relationships. As the problems increase in difficulty, students transfer the manipulation of the pan balance to solving equations independent of the balance.
Students use a Sketchpad pan balance model to solve a sequence of equations with positive numbers and variables, represented by weights, and negative numbers and variables, represented by balloons. Students use tables, graphs, and equations to represent and solve a real-world problem about two hikers walking at different speeds in opposite directions along the same trail.īalancing with Balloons: Solving Equations with Negatives Hikers: Solving Through Multiple Representations Students then create stories based on given graphs and create graphs based on given stories. They decide whether a given graph corresponds to the motions (walking fast, walking slow, stopping, going backward) described in the story. Students interpret linear piecewise time-distance graphs that represent different stories about a character, Mellow Yellow. The game can be modified to play alone as well. Students acquire an intuitive feel for slope as they construct and play a game in which one player rearranges lines on the screen and the other player tries to match each line with its slope measurement. This activity fosters the understanding that graphs depict the set of points whose coordinates satisfy an equation. Too often students don’t really understand the connection between an equation and its graph. Students are informally, experientially introduced to the relationship between descriptions of coordinate patterns and graphs in the Cartesian plane. View Overview | Download Activity Files (.zip) The area of the completed rectangle represents the product. Using the polynomial factors as dimensions, they build rectangles out of tiles. Students use Sketchpad algebra tiles to multiply polynomials. Tiling in a Frame: Multiplying Polynomials
#Wifi explorer quadratic model zip
zip activity files, right-click the download link and choose Save Target As to save to your computer. NOTE: If you are using Internet Explorer and are unable to download the.
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