# Designing Challenge Questions. One Difference Between Challenge-Based and Taxonomy-Based Instruction The order that material is presented is reversed.

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Designing Challenge Questions

One Difference Between Challenge-Based and Taxonomy-Based Instruction The order that material is presented is reversed.

Taxonomy-Based Instruction Start with a general principle, illustrate it with specific cases e.g., derive the Navier-Stokes Eq., then apply it to flow in an artery

Challenge-Based Instruction Start with a specific case: Start with a specific case: Students do not have sufficient background to adequately address the challenge on their own Students do not have sufficient background to adequately address the challenge on their own Design activities that bring in relevant portions of the taxonomy Design activities that bring in relevant portions of the taxonomy Build up to general principles Build up to general principles

Best Way to Design an Effective Challenge Design an effective summative assessment problem that tests students mastery of the module objectives Design an effective summative assessment problem that tests students mastery of the module objectives Use an old Homework Problem Use an old Homework Problem Use an old Exam Problem Use an old Exam Problem Examine Court Cases Examine Court Cases

Examples of Challenges BiomechanicsandBiotransport

Challenge A man is free to move his torso about an AP axis in the frontal plane. When will he lose his balance?

Why dont these people fall over? Why dont these people fall over?

Challenge: Why does a vertebra fail along a 45 degree angle during axial compression? R R R R

Bungee Jumping and Pennsylvania Law How can we design a bungee cord to meet Pennsylvania State codes?

Iron Cross Challenge What muscle strength is needed for an athlete to hold this position?

Design of a rapid reaction apparatus You want to study the reaction A + B AB using the apparatus below. The reaction is thought to be virtually complete in τ seconds. What flow rate would you suggest (Q A =Q B )? What size syringe (volume) do you need for an experiment that lasts 5 τ? Challenge: You need to purchase syringes for this experiment. High pressure syringes are expensive. What is the minimum pressure rating required for this application? Probes that measure A, B, or AB Smooth, square duct 200 cm long d = 0.3cm A B

Determinants of Cell Size Why are cells so small? What factors limit the ultimate size of cells?

Effectiveness: Control vs. CBI

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