Find an unknown multiplier
3rd grade.MATHEMATICS: (Bulgarian educational system)
Based on the lesson “Finding an unknown multiplier”
3 greade page 116 “Mathematics” publishing Bulvest
|
Materials for the lessonDidactic game template, worksheet, worksheet, and schematics |
Layout of the classroom
|
|
Phase 1Directions for the game:“”The bear and the honey”Didactic game Directions:Help Mechoke find the branch in which the bees have hidden the honey.Ø Outline his path with rays. Start from the quadrangle.Pass as many rectangles as the value of the unknown multiplier in the tasks.Ø Follow the sequence of tasks.Ø Be careful in the directions. |
|
Phase 2Questions:1. Roll up. Make as many rectangles as the value of the unknown multiplier in the work:7. x = 352. Turn right. Pass as many rectangles as the value of the unknown multiplier in the work:6. x = 183. Go down. Make as many rectangles as the value of the unknown multiplier in the work:4. x = 284. Turn left. Move as many rectangles as the value of the unknown multiplier in the work:x . 6 = 545. Go upward. Make as many rectangles as the value of the unknown multiplier in the work:x. 8 = 406. Turn right. Pass as many rectangles as the value of the unknown multiplier in the work:x . 4 = 167. Go down. Make as many rectangles as the value of the unknown multiplier in the work:x . 7 = 428. Turn right. Pass as many rectangles as the value of the unknown multiplier in the work:18 =x. 29. Go upward. Make as many rectangles as the value of the unknown multiplier in the work:56 = x. 810. And now where? How many in nine is seventy-two years …?The lesson from the game is: “Foreign labor does not steal! Respect hardworking bees! |
|
Phase 3The teacher explains to students how an unknown multiplier is located. -Unknown multiplier is when the work divides the famous multiplier.Example 6 . x = 4242/6=?And points to one student to answer and solve the task.Specifies a student to answer and solve the task.Solution:42/6 = 7Checking:6 x 7 = 42 |
|
Phase 4
|