Teach how circuits work with this fun activity – make bulbs light up, and buzzers buzz with the press of a button, or flick of a switch!
Some things to gather for this project:
- Alligator clips – used to connect each block to other blocks in the set. Any will work, the ones shown above were made with thicker gauge wire (16 AWG audio speaker) and larger clips for durability. The test leads you can typically get work okay, but kids tend to destroy them rather quickly.
- LED block – made from a string of LED christmas lights. Ensure that the + and – legs are labeled properly on this one. LEDs are a diode, which means that the electricity has to flow through them the proper direction – the + has to be attached to the positive side of the battery and – to the negative side.
- Potentiometer – this is a variable resistor. When the resistance is high, less electricity is flowing through the circuit. When lower, more. So, when the volume is turned all the way up on a speaker or speed on a motor, the resistance is lowests. When the speaker has the lowest volume or lowest speed on the motor, the resistance is at its highest through the potentiometer.
- Piezo speaker – this is a little buzzer. Make sure for this project you are using the one that is NOT labeled “ED” – those are for a different project and Instructable I will link to. These, like the LEDs, need to be hooked up with + to positive and – to negative.
- Battery – plain enough, this powers the whole thing. See a later step, but DO NOT short circuit the battery for too long (connect the two terminals directly to each other) or it will heat up a bunch and start smoking!
- Motor – a little DC motor. This can be hooked up either direction – changing the polarity of how it is hooked up will change the rotational direction of the motor, a great experiment to do with these kits.
- Knife switch – looks like something right out of Frankenstein! These switches are a way to hook up two separate components to the same battery, or just make a on/off switch that stays on/off for a component. See a further step in this Instructable for how to hook it up.
- Momentary switch – this is a simple push button switch. When it’s depressed, it allows current to flow through the circuit. When it is not pushed, it breaks the circuit. A great setup to do is put it in line with a speaker and have the kids make Morse code.
Click HERE for the instructions
Put some dry beans into a cleaned aluminum can. Top with the rubber from a balloon. Secure the balloon with duct tape and use washi tape to decorate. Use a make-shift mallet to make a beat, or shake it like a maraca!
Roll up a piece of newspaper. Paint. Then fold as shown, tucking the end in when complete. Cute!
pic via pinterest
Sick of turkey yet? Try this healthy dinner!
1 lb salmon fillet
3 cloves garlic, minced
1 1/2 tablespoons lemon juice
1 1/2 tablespoons honey
2 tablespoons butter, melted
3 dashes cayenne pepper
1/4 teaspoon salt
1 tablespoon chopped parsley
Sliced lemon, for garnishing
Click HERE for the instructions
Need a delicious dinner idea? Try this!
A doitandhow.com original! You’ll need:
- 16 oz spaghetti, boiled and drained
- 1 lb hamburger, fried and drained
- 1 Cup of cottage cheese
- 1 egg
- 2 cups of shredded mozzarella
- In a 9X13 casserole dish, spread a very thin layer of sauce. This keeps the lasagna from sticking to the pan.
- In the same pan you used to fry, mix the remaining sauce with the drained meat.
- In a small bowl, stir together the cottage cheese and egg.
- Layer over the small amount of sauce; half of the spaghetti and then half of the meat, spreading each layer out carefully.
- Then spread all of the cottage cheese mixture over. Then repeat with the remaining spaghetti and meat.
- It is important for all of the spaghetti to be covered or coated with some of the saucy meat – this keeps the spaghetti from getting hard on the edges.
- Top evenly with shredded mozzarella.
- Bake in a preheated oven at 350°f for 30 minutes or until the cheese is golden.
Comment below if you’ve tried this recipe and how you like it! Were there any changes you made in your kitchen that made it better?