A magical yo-yo that lets you make ice cream while you play!
Put ice, salt, and water into the main body, and then add the ice cream ingredients such as orange juice.
Close the lid and play the yo-yo for about 3 minutes...As the ingredients mix, the inside of the unit cools to about -7 degrees (actual measured value), and ice cream is made.
You can also make ice cream by removing the string and rolling it.
Includes 10 ice cream recipes!
Includes hints and explanations for experiments that can be used for elementary school students' summer vacation independent research, such as making ice cream through "freezing point depression."

[Set contents] Main unit (1), spoon (1), yo-yo string (1), recipe and instruction manual (1)