Ask an Expert (Page 34)

Ask an Expert Topic Forum: Grades 9-12: Math and Computer Science

Can AI diagnose breast cancer - Project Can AI diagnose breast cancer - Project I've run all the cells needed to run for the project but I'm unsure of how to analyze and understand the results? When you reach the end of the project, you are presented with a graph of the performance metrics of the neighbors in this project, but I'm not sure what the accuracy, precision, and recall represent. I'm also unsure of what the decision boundary is showing me. It's a graph with several blue and… Read more

Question about Secret Messages With Invisible Ink! activity

Ask an Expert Topic Forum: Grades 6-8: Physical Science

Question about Secret Messages With Invisible Ink! activity Question about Secret Messages With Invisible Ink! activity Type your question below and then press Submit! Instead of cardstock can I use white construction paper or printer paper? How important is it that it be cardstock? ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/invisible-ink]Secret Messages With Invisible… Read more

Smarter Farming with Aerial Photo Analysis

Ask an Expert Topic Forum: Grades 6-8: Life, Earth, and Social Sciences

Smarter Farming with Aerial Photo Analysis Smarter Farming with Aerial Photo Analysis Hi I need some help with this project “ Smarter Farming with Aerial Photo Analysis” 1. I don’t have a digital camera. Can I use my phone instead to take the Ariel view picture? 2. I do not have any image editing software. Can you suggest something which is free? GIMP? 3. Am i supposed to do a presentation in a ppt or which format iam supposed to deliver this project output/ result? 4. Am i supposed to… Read more

Help testing tensile strength (Seaweed fabric project)

Ask an Expert Topic Forum: Grades 6-8: Physical Science

Help testing tensile strength (Seaweed fabric project) Help testing tensile strength (Seaweed fabric project) Posted on behalf of student Project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/GreenChem_p006/green-chemistry/alginate-seaweed-biofabrics#materials ----------------------------------------- Please help. The samples do not seem to break. Can I use something else rather than the clamps? Maybe it’s the spring scale? The sample use without glycerin just broken… Read more

Metal won’t launch through model mass driver

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Metal won’t launch through model mass driver Metal won’t launch through model mass driver Hello, I’m working on a model mass driver project and it’s due in 2 days. Here’s the link to the project that I followed: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Elec_p094/electricity-electronics/arduino-mass-driver . I’m having a problem with the metal launching through the tube. I’ve tried to see if the metal will launch through the tube if the coils were connected to the… Read more

Adding Bluetooth to Artificial Pancreas

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Adding Bluetooth to Artificial Pancreas Adding Bluetooth to Artificial Pancreas How can I add Bluetooth to the artificial pancreas project? Re: Adding Bluetooth to Artificial Pancreas Hi - we don't have our own Bluetooth tutorial, but if you search online you should be able to find many Bluetooth tutorials for Arduino, where for example you can display sensor readings in an app on your phone. Read more

Question about How do Self-Driving Cars Know What to Do? activity

Ask an Expert Topic Forum: Grades 6-8: Physical Science

Question about How do Self-Driving Cars Know What to Do? activity Question about How do Self-Driving Cars Know What to Do? activity Type your question below and then press Submit What decision should a self driving car take if suddenly an animal comes in between the road ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/self-driving-car-algorithm]How do Self-Driving Cars Know What to… Read more

Ardiuno Clinostat Beginner error

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Ardiuno Clinostat Beginner error Ardiuno Clinostat Beginner error Hey, I am new to ardiuno and coding and once I had posted the code (link: https://www.sciencebuddies.org/science-fair-projects/project-ideas/PlantBio_p054/plant-biology/plants-grow-microgravity-arduino-clinostat), the servo motor was getting controlled by the potentiomotor, and it was moving while i turned the potentiomoter. Although in the actual clinostat shown in the video, the servo motor is continously moving and the speed… Read more

Glitch in Object detecting goggles

Ask an Expert Topic Forum: Grades 6-8: Physical Science

Glitch in Object detecting goggles Glitch in Object detecting goggles Hello, I have a question regarding the object-detecting goggles you discussed on your website. So, I made the circuit and everything works alright but the code is not working well. Because sometimes even when no object is present, the buzzer makes small beeping noises. I have put in the direct code from your website; i.e. copying and pasting it onto the Arduino IDE. I've also checked with the serial monitor but to no… Read more

Orange and avacado peel polymer

Ask an Expert Topic Forum: Grades 9-12: Life, Earth, and Social Sciences

Orange and avacado peel polymer Orange and avacado peel polymer Hi, Have been doing this super absorbent polymer that kiara has done and I have been using these type of methods For the Preparation of the Orange peel Polymer, 6 full oranges were peeled, including as much pith as possible and left to simmer in 50 mL of lemon juice for 1 hour. The orange peels were then placed in a stainless pot (unreactive) filled with 500 mL of distilled water and left for 1 hour before bringing it to a… Read more

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