Skip to main content

Tension Tension

 

In this STEM activity, students will learn about tension as a force and how it acts on structural components through a hands-on group design problem.

Through this activity, the students are excepted to learn about force and tension and their balancing. When the ends of the thread are tied to the pencil and the nail, a tension will be created on the string and as a result, the pencil cannot fall on the side opposite to the nail where it is tied. But, still, it can fall on the remaining three sides. So, now if we tie a thread to these remaining three sides, the force or tension created by the threads will be balanced and pencil will be able to stand upright.

For their final task students will be instructed to balance a pencil upright with the help of the given materials.

Sample video of the final task: https://youtu.be/IlnkYlTOlb8

Objective: Introducing Class 4 & 5 students to the concept of Tension force.


The Tug of War

Students will be taken to the field for a three-round Tug of War game. The three rounds will be played as follow:

Round 1: There will be an equal number of students on each side.

Round 2: Team A will have a lesser number of students.

Round 3: Team B will have a lesser number of students.


Assessment

Post-Activity Reflection: Students will be given five minutes to reflect on the activity and think about how and why the number of students in a particular group affected the outcome of each round. Then together as a class, the teacher will go around the room having students one-at-a-time name items on their lists. Discuss and write the ideas on the board, until no new ideas are presented.

Possible answers:

1) When the number of students was equal on each side, the round took longer to complete.

2) When the number of students was unequal, the team with more number of students wins.

3) More students = More force

4) Equal and opposite force cancels each other.

The teacher will then introduce students will Tension force:

The Tension Force is defined as the force that is transmitted through a rope, string or wire when pulled by forces acting from opposite sides. The tension force is directed over the length of the wire and pulls energy equally on the bodies at the ends.

Post-Introduction Reflection: Students will be given five minutes to think of five real-life examples of structural elements in tension, and write them down on paper. Then together as a class, the teacher will go around the room having students one-at-a-time name items on their lists. Discuss and write the ideas on the board, until no new ideas are presented.

Possible answers:

Chandelier light hanging on the ceiling through a rope, cables (wire ropes) that hold up bridges, wire fences, flag hoists; telephone and cable lines hanging between poles and houses, ropes with pulleys that lift heavy loads, elastic bands and guitar strings, cable car, etc.


The Challenge

For the final task, students will be challenged to balance a pencil upright on the table using the given materials.

Supplies for the task:

1) Cardboard

2) Scissors

3) 4 Nails

4) Hammer

5) Pencil

6) Cotton Thread(2 foot)

7) Wooden piece (20x20cm)

STEPS:

Step 1: With the help of an adult, students will cut a circle(radius 6cm) out of cardboard.

Step 2: Placing the circle on the wooden piece students will hammer 4 nails on four sides of the circle.

Step 3: Students will now try to balance a pencil at the center of the circle using thread and nails.

You can find a sample video here: https://youtu.be/IlnkYlTOlb8




Labels:
Location: India

Comments

Post a Comment

Popular posts from this blog

Space Invader With MakeCode

  Microsoft MakeCode is a framework for creating interactive and engaging programming experiences for those new to the world of programming. The platform provides the foundation for a tailored coding experience to create and run user programs on actual hardware or in a simulated target. MakeCode uses the blocks programming model to let the user learn coding concepts in a more tangible fashion. The blocks map directly to actual lines of code in a programming language. So, once a user has a sense of confidence and familiarity with how the blocks work, they can transition to coding more complex programs in the programming language itself. In this Instructable,  we'll develop  a simplified version of the classic ' Space Invaders ' game using Microsoft MakeCode. As opposed to the real game of Space Invaders game, our Invader(enemy) will be firing and moving horizontally across the top of the screen. The player will control a laser cannon by moving it horizontally across the ...
Post a Comment
Read more

Bernoulli’s Mist Sprayer

  No doubt students learn more when they are mentally and physically engaged in the learning process, regardless of the subject they are studying, and when it comes to STEM education , hands-on experiential learning is an indispensable part of the learning process. In this hands-on activity, we will make a water sprayer using two straws, and experience Bernoulli’s Theorem . Category:  Physics Sub Topic:   Fluid Pressure Time Required : 20-30 min Difficulty:  Easy Things We Need 2 Straws (4 inches each) Insulation Tape Eraser Scissors A glass of water Assembly Pic 1:   Cut two insulation tape pieces and attach them to either end of both the straws. Pic 2:   While attaching the tape, make sure to leave some space from the end(4-5mm approx). Pic 3 : Tape the 1st straw(I used Green straw as 1st) to the eraser so that the straw is exactly aligned with the edge of the eraser. Pic 4:   Next, tape the second straw(I used Orange straw as 2nd) to the edge of th...
Post a Comment
Read more

Rose Window with Tinkercad

I love to study ancient civilizations and architecture. Last summer I attended a 3D printing workshop, "Tinkering with Tinkecad" at my school. At the workshop, I learned how 3D printing is not only revolutionizing STEM learning but also aiding other streams like Geography and History. I learned how I can print out historical artifacts to examine and understand them much better. Here, I'm sharing how I used Codeblocks to create the Rose Window of the Abbey of Fiastra . Things We Need Computer Internet 3D software ( Tinkercad ) Computer mice, 3D printer, and filaments for printing(optional) Division For convenience, we will divide the Rose Window into 2 parts,   Inner Shell  and  Outer Shell . Inner Shell: Division and Identification The Inner shell of the Rose Window can divide it into 3 parts: Central Part:   made up of a solid cylinder at the center with hole cylinder with 12 cylindrical holes with the base pointing towards you. Middle Part:   is made up of ...
1 comment
Read more