Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: Teaching them to observe all things whatsoever I have commanded you: and, lo, I am with you always, even unto the end of the world. Amen. ~Matthew 28: 19-20
Ways to Incorporate World Missions into Homeschooling
Monthly Geography Lessons: Get a list of all the missionaries your church supports. From that list chose a country to study for that month. Hang a picture of the country and the country’s flag on your classroom wall. Study the history, culture, food and day to day life in the country of focus. If possible find audio of the native language of that country for your children to hear.
Hands on Activities:
Younger children can make the country’s flag out of construction paper.
Have a night where you serve a traditional meal from the country focused on.
Contact the missionary to let him and his family know you are praying for their ministry.
If you have a prayer card, hang it in your classroom and pray for the family daily.
Encourage your children to give by giving them jobs to earn money for missions. Then place the money in a mason jar and give it as an offering at the end of the month. It may not be a large amount of money but it will be a blessing.
Have your children make and send cards to the missionary family. If possible, allow your child to become pen pals with one of the missionary children.
Study past missionaries in that country using biographies and write a report on how the field has changed over the years.
See if you can email a missionary a list of short questions for an interview about the country and the mission field.
Do not be discouraged if you have trouble with contacting any of the missionaries. They are very busy and may not have the time to engage in some activities. Take their lead without asking them to participate in every idea mentioned. 
Developing a Heart for Missions: As your child studies the different countries and missionaries a heart for missions will develop. A child needs to see a world beyond their view to appreciate missions. It will be a blessing to see your child develop an urgency to spread the gospel and understand the world around him.