Group 3 design process

We began with these materials:

Materiales we began with

And the water to sanitize had these levels:

Alcalinity level 80

chlorine level .5 low

Ph 80 high

Copper 0.5

total chlorine level 0

lead 20

nitrite 0.5

nitrate 10

fluoride 0

The plan: set up the filter and test our design

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Began with coffee filter, then sand and gravel. Put another coffee filter on top.

 

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This was the outcome:image

Alcalinility and Ph improved with this design so we use one more coffee filter.

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We try to improve our design by using paper towel before the coffee filter and cleaning the rocks and putting another piece of paper towel on top of the washed rocks, and last coffee filter.

To the group there seemed a big improvement…

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Difference from first design on the right and second design at the left.

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But it was not that great improvement when we tested.

The Design Learning Protocol

The Design Learning Protocol

Makerspaces have become ubiquitous in schools, with the well intentioned goal of fostering a mindset of creativity and innovation in students through design and making. The ageless old truism that students learn best by doing is coming alive again in an increasing number of schools that are investing time, energy and resources into outfitting spaces for design and creativity. Painstaking efforts are channeled into finding precious curricular room for design as an embodiment of the innovator’s paradigm.

As laudable and positive as these initiatives are, in that they foster a much needed entrepreneurial mindset in students that will have to make decisions on their own in a world that irreversibly has become an open and at the same tantalizing playground of infinite opportunities, in most cases the emphasis on design as a process is overshadowing that the foundations of creativity and innovation need to be anchored in lifelong learning. Unless it is strongly underpinned by a learning component, the maker movement will become one more passing fad in the ever so ephemeral world of educational trends.

In effect, design can become a valid paradigm for the backbone of the school of the future only when it, does, indeed, constitute a catalyst for lifelong learning, the acquisition of skills and, much more importantly, the motivation for lifelong learning, the ultimate goal of schools for now and the future.

The Design Learning process adds to the design paradigm by means of supporting the creativity and innovation process through curriculum instances that explicitly foster the development of skills for enquiry and lifelong learning, as well as by a suggested step by step protocol that integrates the learning and design process towards the creation of products that solve a real life need in the context of the classroom.

Team 2 Design

  1. Gather materialsMateriales we began with
  2. pH level= 8.2 Particulate level=347
  3. Used soap in tray to clean pebbles/rock with waterIMG_1668
  4. Rinsed pebbles/rocks twice with unfiltered water
  5. Tested water again
  6. Drilled hole in capimage
  7. Attached cap to filter apparatus
  8. Filled paper filter with sand
  9. Used wire mesh with pebbles on top
  10. Completed assembled filterIMG_1655
  11. Ending test pH level 7.2
  12. Test particulate level 368

Group 5 – Design

The test of the control indicated that this water in its original state was “acceptable” for drinking. It was marginally alkaline with a pH between 7.2-7.8, with no measureable levels of other contaminates. The meter reading was consistent with the strip tests.

In the image of the strips:

  • Number 1 was the original, untreated water sample.
  • Number 2 was our first filtration system.
  • Number 3 was the second iteration after washing the rocks.
  • Number 4 was our final iteration which included a paper filter between each filtration step.

Observationally, the colors looked the same although some bleeding and changes occurred as it sat on the paper towel.

Group #1 Step 5: Design

Initial testing of sample

400 Parts per million (ppm) of contaminants (high total dissolved solids) 500 is US EPA maximum contaminant level

  • Alkalinity – 40 ppm
  • Free Chlorine – 0.5 ppm
  • Total Chlorine – 125 ppm
  • PH – 6.4
  • Copper – 5 ppm
  • Lead – 0 ppm
  • Nitrite – 0 ppm
  • Nitrate – 5 ppm
  • Fluoride – 0 ppm

Filtering layers

  • coffee filter as bottom layer because it is the finest filter; taped to side of cylinder
  • Sand
  • Rocks
  • Screen

Test 1

Results

  • 374 ppm contaminants
  • Alkalinity – 180 ppm
  • Free chlorine – 0 ppm
  • Total Chlorine – 25 ppm
  • PH – 7.6
  • Copper – 5 ppm
  • Lead – 0 ppm
  • Nitrite – 0 ppm
  • Nitrate – 5 ppm
  • Fluoride – 0 ppm

Mild improvement overall; good improvement with respect to alkalinity and PH

Design adjustments

  • Added paper towel between coffee filter layer and sand layer
  • Washed rocks