AhaSlides, Gimkit, Blooket are the tools that I use. AhaSlides is a more mature version while the other two focus on gamification aspect.
the cheapest alternative source of energy is biomass. because we can use it all and free and easy to find.
Flour and water, or you can use corn starch and water. If gluten free just use a gluten free flour alternative.
It cost ample preparation and efforts. Facebook Fan page is free and you can use free alternative apps to design your fan page.Though you can buy some apps in facebook designing but alternative apps are also good so no need to buy. Hope this helps! Goodluck.
commodity money
A reinforced or heavy-duty hose is a good alternative to a kink-free hose for watering your garden. These hoses are less likely to kink and are more durable for regular use in the garden.
A good alternative for garlic salt in recipes is to use a combination of garlic powder and regular salt to achieve a similar flavor profile.
Hacksaw blades are a good alternative.
These models use three alternative cash-flow measures: dividends, accounting earnings, and free cash flows.
Some delicious recipes that use unsweetened oat milk as an alternative ingredient include creamy soups, dairy-free mac and cheese, and smoothies.
Norwex is another great alternative that is safe for children and the environment because it is chemical-free. It removes 99.9% of bacteria without the use of harmful chemicals.
You can use herbs, spices, citrus juices, vinegar, or salt-free seasoning blends as alternatives to salt in your cooking.
You can purchase time tracking software through a number of company's, but if your just looking to compare Wikipedia has a great rundown of all the services. However if your looking for a good free alternative Fanurio is what I use, and I have nothing but good service fro the program.