関連ワード:  define thematic map class 6    what is a thematic map class 6    what is a thematic map class 6 answer    explain thematic map class 6    what is a thematic map give examples class 6    what is a thematic map short answer class 6    what is a thematic map used for class 6    what is a thematic map give examples    what is meaning of thematic map    types of map class 6