Q: Visual aids can be a great way to represent information and present it to your audience. Using these visual aids can also help your audience to understand and retain the information you are presenting. You can try using charts, videos, or images to help make your points easy to understand and appealing. Keep visuals as clean and simple as you can. Include visual presentations in your rehearsals and practice. Don't rely fully on visual aids for your training session. If you plan on presenting any information using a visual aid, do not distribute information or hand-outs at the same time. This can cause your audience to become distracted and possibly miss some of the information being presented. Hand out any materials before or after using a visual aid. Keep the audience focused on the visual aid when it is being presented. Technology that is used during a presentation to deliver a visual aid may break down or fail. Without a back up plan in place, your presentation may suffer. Always make sure to have another method to present this information should a visual aid become unusable. Have print outs of any images or diagrams that can be distributed. If a video is unable to be played, be ready to present the information that the video covered.
A: Prepare any visual aids you might need. Don't hand out material while presenting a visual aid. Have a back up plan in place.

Q: Use a scraping stone or a hard wire bristle brush to rub the surface of the rock. Scrape off any sharp or pointy edges that exist on surface of the rock. Allow the rock to cure for a week prior to scraping to prevent crumbling. Thoroughly rinse the surface of the rock. Brush the surface with a wire brush while washing to remove any loose bits of mortar. Make sure to flush out any creases or dips in the rock to get rid of rock dust. Use a penetrating concrete stain to cover the surface of the rock in the color of your choice. You can apply multiple colors to provide the most natural look. For a more obvious design element, shiny aggregates or even glow in the dark powders are also available to add to the mix. Brush the stain on rock with a paint brush. Add depth to the coloring by using more than one color. Apply more stain in some areas for darker contrasts. Use a water or solvent based concrete sealer to protect your artificial rock from the elements. Some sealants provide a glossy finish while others have no sheen but still provided protection. Brush on 3 coats of sealant. Wait about 15 minutes between coats. Maintain the sealant by reapplying a coat of sealant every 1-2 years. Decide which side is the bottom of the rock, and cut it open so you can remove the inner structure. The rock's shape and strength come from the mortar and wire frame; the inner materials do not provide structure after the concrete has cured. Removing them will prevent them from decomposing.
A: Scrape the rock to smooth the edges. Wash the rock. Stain the rock. Seal the rock. Remove the inner base from the rock.

Q: Both devices must be signed in to the same iCloud account. You can open tabs on one device that are currently open on another. This is located in the lower-right corner, and looks like two overlaid squares. You will see a list of your iCloud tabs that are open on your other device.
A: Open Safari on two different devices. Visit websites on each device. Tap the "Tabs" button on one of your devices. Scroll down to the bottom of the list of tabs. Select the tab you want to open.

Q: The bigger the number, the more accurate your calculation will be. x * sin(180 / x). For this to work, make sure your calculator is set to Degrees. The reason this is called a Limit is because the result of it is 'limited' to pi. As you increase your number x, the result will get closer and closer to the value of pi.
A:
Pick a large number. Plug your number, which we'll call x, into this formula to calculate pi: