Reddit mentions of National Brand Computation Pad, Plain on Front Side / 5 X 5 Quad on Back Side, 8.5 x 11 Inches, Green Paper, 100 Sheets (42382)

This paper, while expensive, is totally worth it.

[Engineering Paper. Lots of it.] (http://www.amazon.com/National-Computation-Inches-Sheets-42382/dp/B0007LTJO0/ref=pd_sim_op_3)

A dry erase board (at least 3' x 2') with thin tipped different color dry erase markers for homework. One or two people in my engineering dorm had one, pretty soon everyone had one and we'd pooled some money together to put a full classroom sized on in our common room. It's super helpful.

I find that it really helps to have a piece of paper, both blank and graph, handy. (This is perfect) then to work out a smaller version of the problem by hand, then automate the process via program.

Unfortunately, several companies sell the comp pads with no on-page branding. I'm guessing from the first image that you're looking for a green pad but some companies offer a buff pad using the same paper, tan with a brown grid. Might be an alternate option to use while searching.

If Ampad isn't to your liking, you might also look into

• TOPS pads (https://www.amazon.com/TOPS-Engineering-Computation-Punched-35500/dp/B001J87JTM/ref=sr_1_5?crid=3KOPVWX11NN3R)
  
• National Brand pads (https://www.amazon.com/NATIONAL-Brand-Computation-Sheets-42389/dp/B0007LTJO0/ref=sr_1_7?crid=3KOPVWX11NN3R)
  
• Roaring Spring pads (https://www.amazon.com/Roaring-Spring-Engineering-Green-sheets/dp/B005UOGBKO/ref=sr_1_3?crid=3KOPVWX11NN3R)
  
• Staedtler pads (https://www.amazon.com/Staedtler-Engineering-Computation-Grid-Sheets/dp/B0006OM7RE/ref=sr_1_1?)
  
  edit: formatting

I prefer engineering paper. http://www.amazon.com/National-Computation-Inches-Sheets-42382/dp/B0007LTJO0/ref=sr_1_6?s=office-products&ie=UTF8&qid=1382121527&sr=1-6&keywords=engineering+paper

This is similar

National Brand Computation Pad, Plain and 5 X 5 Quad On Back, 8.5 x 11 Inches, Green Paper, 100 Sheets (42382)

https://www.amazon.com/dp/B0007LTJO0/ref=cm_sw_r_cp_api_Z1NCAbZGSMMRX

National Brand Computation Pad, Plain and 5 X 5 Quad On Back, 8.5 x 11 Inches, Green Paper, 100 Sheets (42382) https://www.amazon.com/dp/B0007LTJO0/ref=cm_sw_r_cp_apap_3fMUKPwE3UxRP

Amazon!

At my summer job working for World Class Electronics Company, I was introduced to National 42382. They used it to sketch out their cutting-edge designs. It's very nice stuff. I prefer to use it with a Pentel P205 mechanical pencil (link) and 0.5mm 2B lead.

But when that's not available I just grab a few sheets of copier paper and scribble with whatever Bic pen happens to be laying about.