Devon is walking to the library after school. He comes to a busy street with a lot of cars. Devon knows it is not safe to cross in the middle of the street.

Devon walks down to the corner. He presses the button at the crosswalk and waits on the sidewalk. When the walk signal turns white, Devon looks both ways and crosses the street.

Nora has a headache. She wants to take some medicine to feel better. She finds a bottle of medicine in the kitchen cabinet. Nora is not sure how much to take.

Nora reads the label first. The label says to take one pill. She asks her mom before she takes the medicine. Her mom says it is the right medicine for a headache.

Priya is working at the grocery store today. A customer drops a jug of juice in aisle 4. The juice spills all over the floor. Someone could slip and get hurt.

Priya puts out a yellow wet floor sign so no one slips. Then she tells her manager about the spill. Her manager brings a mop and thanks Priya for being careful.

Andre is taking the train downtown to meet his friend. He waits on the platform at the station. There is a bright yellow line near the edge of the platform.

Andre stands behind the yellow line so he is far from the edge. Soon he hears the train coming. Andre waits for the train to stop and the doors to open before he steps on.

Maya is shopping at the mall with her sister. She stops to look at a hat and her sister keeps walking. When Maya looks up, her sister is gone. Maya starts to feel worried.

Maya knows not to go outside by herself. Maya stays inside the store and asks a worker with a name tag for help. The worker helps Maya call her sister on the phone.