How to impress a single mom
Show her that you're good with children.
When her kids are around, make it a point to say hi and get them to smile. Try complimenting some aspect of their appearance, like their favorite toy or new pair of shoes, or pointing out things you have in common, like your mutual love of ice cream.

Getting her kids to like you is a surefire way to win her approval. Having your own child or a younger sibling with you can provide you with a convenient icebreaker and help you make that initial introduction.

How to demonstrate the greenhouse effect
Place the thermometers in direct sunlight.
Put them on a concrete or wood surface that is in direct sunlight outside. Allow them to sit in the sun for 3 minutes.

Set the timer or clock to 3 minutes so you know when the time is up. You can also place the thermometers under a sun lamp for 3 minutes if you are creating a model indoors.

How to relieve heartburn
Pay attention to the foods that cause heartburn for you.
While there are some common foods that cause heartburn, everyone has different trigger foods. Keep track of the foods that seem to cause heartburn for you and try to avoid or at least limit your intake of those foods.

Try keeping a food diary to help you keep track of the foods that cause you heartburn. Common heartburn trigger foods include peppermint, caffeine, sodas, chocolate, citrus fruits and juices, tomatoes, onions, and high-fat foods.

How to be friends with someone who has kids when you don't
Include your friend's kids in outings with your friend.
It can sometimes be difficult for people with kids to find someone to watch their kids. If this often happens with your friend, then you might suggest meeting up somewhere that is child-friendly.
For example, you could suggest meeting up at a local park. The kids can play while you and your friend can catch up.