Today, Oliver and I worked on the differences between the units of Fahrenheit and Celsius, both of which are used to measure temperatures. I explained to Oliver how to convert from Celsius into Fahrenheit using the relationship (*F = *C x 1.8 + 32). Oliver was able to understand how Celsius is based on the boiling temperature and freezing temperature of pure water. Oliver was able to convert between temperature units and add and subtract one temperature from another.