21 st Century Math Projects

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2 CSI Whodunnit? Skill Builder Absolute Value Equations Standard Focus : Number, Number Sense, and Operations Time Range : 1 Period Supplies : Pencil and Paper Reasoning with Equations and Inequalities A- REI 3. Solve linear equations and inequalities in one variable, including equations with coefficients represented by letters. Procedures: A.) Give students a CSI: Whodunnit Worksheet. Students will need to solve the 10 problems. Each correct answer will result in a clue. Students will check off the Players, Last Known Whereabouts locations and Methods that are accounted for. The one remaining from each column is the correct solution. In this case it should be Mrs. Gamma used mauling by a cougar by the pool. This activity is modeled after my chain problems from my CSI Projects and the popular new Reality TV Show Whodunnit? B.) Print out the Clues. Cut them out and I suggest you laminate them for future use. Spread them in different locations in the classroom and turn them loose. They will love it! Have teams of 2-3 circulate and attempt to figure out the clues. Once they think they have all the pieces they can come to you to see if they are right. If they are wrong, let them figure it out

3 Name: Six contestants on a reality TV show were stunned to find their lowest scoring colleague was murdered. They must figure out the crime before the bell rings. The question is Whodunnit? And how The Player, Last Known Whereabouts and Method that are left unaccounted for -- is the solution

4 Who is the Killer? (The three boxes left unchecked will reveal the crime. If you cannot figure out, you may be next) The Last Known The Players The Method Whereabouts Dr. Alpha Atrium Chemical Poisoning Miss Beta Gym Drowning Mrs. Gamma Kitchen Electrocution Professor Delta Library Firearm Assault Mr. Epsilon Movie Theater Mauled by a Cougar Coach Omega Pool Venomous Bite

5 Clue #1 Solve the equation for x. x + 9 = 13 x = ±21 x = 4, 21 x = ±4 Dr. Alpha was on the treadmill in the gym. The victim did not have a venomous bite. The victim did not die of electrocution. Professor Delta was using her ipad by the pool. Clue #2 Solve the following equation for x. x 3 = 64 x = ±67 x = 67, 61 x = 61, 67 x = ±61 Mrs. Gamma was swimming in the pool. Dr. Alpha was reading in the kitchen. The murder was not an assault with a firearm. The murder was not caused by a cougar.

6 Clue #3 Solve the following equation for y. 7y = 42 y = ±7 y = ±6 y = 6 Coach Omega was tanning by the pool. Professor Delta was rearranging the equipment in the gym. A venomous snake did not bite the victim. The victim did not drown. Clue #4 Solve the following equation for a. a = 1 a = 3, 17 a = 3, 17 a = 17, 3 Chemical poisoning was not the cause of death. Dr. Alpha was cleaning popcorn out of the movie theater seats. Mr. Epsilon was making a smoothie in the kitchen.

7 Clue #5 Solve the following equation for m. 3 8m 7 = 51 m = 7.25, 5.5 m = 5.5, 7.25 m = 3, 1.25 m = 1.25, 3 Chemical poisoning is not the cause of death. Mr. Epsilon was watering plants in the atrium. Coach Omega was watching a movie in the theater. Clue #6 Solve the following equation for n. 5 n 9 = 3 n = 7, 11 n = ±7 n = 11, 7 Mrs. Gamma was water the plants in the atrium. The victim did not have a venomous bite. Chemical poisoning is not the cause of death. Miss Beta was researching in the library.

8 Clue #7 Solve the equation for k. k = 7 k = ±21 k = 60, 54 k = 12 A venomous snake did not bite the victim. Mrs. Gamma was preparing a snack in the kitchen. Dr. Alpha was listening to music in the atrium. Clue #8 Solve the equation for y. 20 2y 6 = 10 y = 2, 8 y = 8, 2 y = 14, 18 The victim did not drown. The victim was not electrocuted. Coach Omega was reading in the atrium. Professor Delta was changing a light bulb in the library.

9 Clue #9 Solve the equation for m. 5m = 3 m = 2.6, 1 m = 2.2, 3.8 m = 3.8, 2.2 Miss Beta was tanning by the pool. Chemical poisoning was not the cause of death. Mrs. Gamma was checking her in the library. Clue #10 Solve the equation for x. 2x = 11 x = 6.67, x = 39, 15 x = 18, 15 Miss Beta was reading Harry Potter in the library. Mrs. Gamma was soaking her feet in the pool. Chemical poisoning was not the cause of death.

10 Clue #1 Solve the equation for x. x + 9 = 13 x = ±21 x = 4, 21 x = ±4 Dr. Alpha was on the treadmill in the gym. The victim did not have a venomous bite. The victim did not die of electrocution. Professor Delta was using her ipad by the pool. Clue #2 Solve the following equation for x. x 3 = 64 x = ±67 x = 67, 61 x = 61, 67 x = ±61 Mrs. Gamma was swimming in the pool. Dr. Alpha was reading in the kitchen. The murder was not an assault with a firearm. The murder was not caused by a cougar.

11 Clue #3 Solve the following equation for y. 7y = 42 y = ±7 y = ±6 y = 6 Coach Omega was tanning by the pool. Professor Delta was rearranging the equipment in the gym. A venomous snake did not bite the victim. The victim did not drown. Clue #4 Solve the following equation for a. a = 1 a = 3, 17 a = 3, 17 a = 17, 3 Chemical poisoning was not the cause of death. Dr. Alpha was cleaning popcorn out of the movie theater seats. Mr. Epsilon was making a smoothie in the kitchen.

12 Clue #5 Solve the following equation for m. 3 8m 7 = 51 m = 7.25, 5.5 m = 5.5, 7.25 m = 3, 1.25 m = 1.25, 3 Chemical poisoning is not the cause of death. Mr. Epsilon was watering plants in the atrium. Coach Omega was watching a movie in the theater. Clue #6 Solve the following equation for n. 5 n 9 = 3 n = 7, 11 n = ±7 n = 11, 7 Mrs. Gamma was water the plants in the atrium. The victim did not have a venomous bite. Chemical poisoning is not the cause of death. Miss Beta was researching in the library.

13 Clue #7 Solve the equation for k. k = 7 k = ±21 k = 60, 54 k = 12 A venomous snake did not bite the victim. Mrs. Gamma was preparing a snack in the kitchen. Dr. Alpha was listening to music in the atrium. Clue #8 Solve the equation for y. 20 2y 6 = 10 y = 2, 8 y = 8, 2 y = 14, 18 The victim did not drown. The victim was not electrocuted. Coach Omega was reading in the atrium. Professor Delta was changing a light bulb in the library.

14 Clue #9 Solve the equation for m. 5m = 3 m = 2.6, 1 m = 2.2, 3.8 m = 3.8, 2.2 Miss Beta was tanning by the pool. Chemical poisoning was not the cause of death. Mrs. Gamma was checking her in the library. Clue #10 Solve the equation for x. 2x = 11 x = 6.67, x = 39, 15 x = 18, 15 Miss Beta was reading Harry Potter in the library. Mrs. Gamma was soaking her feet in the pool. Chemical poisoning was not the cause of death.