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Creativity in algebra

Hear from professionals as they talk about creativity in algebra and mathematics. Created by Khan Academy.

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  • marcimus purple style avatar for user Evan Evan
    Algebra saves chickens
    (30 votes)
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    • stelly yellow style avatar for user aditikilambi2
      How to touch Grass:
      Locate an area of grass. The first step in touching grass is to find a place where grass is present. This can be a lawn in your backyard, a park, a sports field, or any other location where grass is growing. Make sure you have access to the area and that it is safe for you to be there.

      Stand or kneel in a comfortable position. Once you have found an area of grass, stand or kneel in a comfortable position. If you are standing, make sure you have good balance and are able to maintain your balance while reaching out to touch the grass. If you are kneeling, place a cushion or towel under your knees for added comfort.

      Extend your arm(s) in front of you, with your hand(s) open and fingers extended. This allows you to easily reach the grass and feel the texture and sensation of the blades.

      Slowly lower your hand(s) towards the grass. Take your time and move slowly to ensure that you don't accidentally step on or damage any of the grass.

      Allow your fingers to come into contact with the blades of grass. You may feel the softness and/or dampness of the grass depending on the environment. You may also feel the different temperatures of the grass if you are in a place with a different climate.

      Gently move your fingers through the blades of grass, feeling the texture and sensation of the grass. Take note of the different feelings and textures you experience.

      Repeat step 6 as desired, moving your fingers through different sections of the grass to experience the variety of textures and sensations.

      When you have finished touching the grass, stand or rise back to your original position. Take a moment to appreciate the experience and the sensation of the grass on your fingers.

      Note: If you are allergic or have any medical condition that may affect you to touch the grass, it is recommended to consult with your physician before attempting this activity.
      (34 votes)
  • male robot donald style avatar for user Akaza101
    how is algebra creative?
    (10 votes)
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    • mr pink green style avatar for user David Severin
      It does not say algebra is creative, it says there is creativity in algebra. There are a lot of number sense tricks based on algebra. For example, the difference of perfect squares (x-a)(x+a)=x^2-a^2. We can thus multiply 43*37 and get 40^2-3^3=1591. It makes the times table make more sense, if 5^2=25, then 6*4=25-1=24, 7*3=25-4=21, 8*2=25-9=16. 8^2=64, so 7*9=64-1=63. You can prove that 35^2=(30*40)+25=1225. The video talks about Algebra is not just Math, but has practical purposes in the real world that allows for all sorts of creativity.
      (10 votes)
  • purple pi purple style avatar for user Wayne Clemensen
    This is a fantastic addition to your program. Often times, we skip over the depth, beauty and complexity of the design of Algebra. I look forward to more of this because a lot of students want to know how this will help them in life and although I give them many reasons from daily life, more examples and explanation is most welcome!
    (8 votes)
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  • blobby green style avatar for user jordanomarmohabbat11
    Sal looks different today...
    (6 votes)
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  • aqualine ultimate style avatar for user Mrs. Morales
    Hi Sal
    (4 votes)
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  • leaf blue style avatar for user Jun
    I'm so confused. None of the questions in each sections of the video was answered directly by the speakers. It's almost like there is zero connection
    (0 votes)
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  • piceratops seedling style avatar for user Denisimo
    I have always understood that i would require the use of algebra throughout my life, but my critical thinking and creativity in algebra seems to be a lot less than average. can somebody help me with my dilemma?
    (2 votes)
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  • male robot hal style avatar for user bob jolensky
    thats what sal looks like
    (2 votes)
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  • blobby green style avatar for user soumilkesani357
    so if i were to say x=4.12 and y=4.12 thats means that xy is just 4.12 to the power of two.
    (1 vote)
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Video transcript

(upbeat music) - Hi folks, Sal Khan here. And all I have to say is that algebra is perhaps the most pure way of expressing human thought. And like everything dealing with human thought, it's incredibly creative. But you don't have to take my word for it. We have some of my good friends to better draw that link between algebra and creativity. (upbeat music) - It's all out solving problems. It's not about like, maybe in previous years, you've done multiplication table memorization. It's not like memorizing how to solve problems. It's learning the tools of how to solve problems and then using them, and building them up in creative ways. So it's kind of like, it really does remind me of art, because if you are doing like a painting or something, you have like a specific tools about maybe paint brushes or different techniques you can use to create something bigger. So I feel like algebra is really all about combining things that you already know how to do into something bigger. - So the word algebra comes from the Arabic word al-jabr, that literally translates to reunion of broken parts. This breaking apart of mathematic representations and putting it back together in the form of balanced equations, is the essence of algebra. And the beautiful thing is that this balancing and solving of equations can be done in many different ways, which is where creativity comes in. (upbeat music) - So if you're trying to communicate a complex topic, such as mathematics or a mathematical problem to the general public who might not be familiar with the specifics behind that problem, there are many different ways to help you get that concept across. And one of the ways that we do this in mathematicals is to use videos and things that are visually appealing to people. So by using lots of visual aids, so bright colors and cartoons, and word prompts on your screen, you can engage and capture the audience in different ways that you might not be able to do if you're just speaking in terms of equations and mathematics. - When we're more creative about how we present, and how we talk about math, it makes it more relatable to people from a variety of backgrounds and cultures and experiences. When we are creative in how we explain, or how we relate mathematical concepts, we can use things from sports, entertainment, or real world to help really ground the principles that we're learning, and the theories that we're learning to something relatable. So the more creative we can be in explaining how math is related to the world around us, how it's related to things that we are invested in, the more likely it is to resonate with the people around us. - As soon as a problem is posed, our instinct is to find the solution. But remember, often there's more than one solution. And usually there's more than one path to it. (keyboard tapping) - One day my family was building this fence around my chicken coop 'cause there were problems with raccoons. And we wanted to make sure that, like the the perimeter of the fence was like, twice the the length of the width. And I remember thinking, this is exactly like my algebra class. Like, I'm actually doing things that are useful. And actually, like algebra wasn't just something that you do on paper, it's something that like, it was actually like protecting the lives of my chickens. So I felt like that was a moment for me where like math is useful to the worlds, and we're solving real problems with it, and it's really powerful. - So I realized that I first liked algebra and just math in general. My first year in college, I was a little bit of a late bloomer in realizing the importance of math. I was taking an early statistics course for my psychology degree, and I really began to understand how the concepts that I were learning could help me understand the world around me better in a more concrete, fluid and rich way. And so being able to make that connection from these things that I'm learning in the classroom, out into the real world, so I can understand different phenomenon, I can understand how various things in our culture work and progress, really helped me and made me feel like I had a deeper understanding for the importance of math and algebra. And from that point, I've really been in love. (upbeat music) - In order to get more creative, I would encourage young people to be not afraid of making mistakes. It's okay to fail while exploring a new trail of thought. Know that usually there is more than one solution to the problem. Math is as much about posing problems as problem solving. And at that point, creativity is noticing where there is something worthwhile investigating. - As a student in math, I think it's important to remember that math isn't just like random symbols on paper. Like, math can mean something, and it's pretty powerful that you as a student, can build something that uses math. Creativity in math isn't just about being able to pluck numbers from the air and like, oh yes, I know the solution. It's about being able to use problems that help with your daily life.